Attiná, F. (1990). The voting behaviour of the European Parliament members and the problem of the Europarties. European Journal of Political Research, 18 (5), 557-579.
Abedi, A. & Lundberg, T. C. (2009). Doomed to Failure? UKIP and the Organisational Challenges Facing Right-Wing Populist Anti-Political Establishment Parties. Parliamentary Affairs, 62 (1), 72-87.
Benedetto, G. (2008). Explaining the Failure of Euroscepticism in the European Parliament. In A. Szczerbiak & P. Taggart, Opposing Europe? The Comparative Party Politics of Euroscepticism, Volume 2 (pp. 127-150).
Brack, N. (2012). Eurosceptics in the European Parliament: Exit or Voice? Journal of European Integration, 34 (2), 151-168.
Brack, N. (2013). Euroscepticism at the Supranational Level: the Case of the ‘Untidy Right’ in the European Parliament. Journal of Common Market Studies, 51 (1), 85-104.
Brack, N. (2015). The roles of Eurosceptic Members of the European Parliament and their implications for the EU. International Political Science Review, 36 (3), 337-350.
Dennison, J. & Goodwin, M. (2015). Immigration, Issue Ownership and the Rise of UKIP. Parliamentary Affairs, 68 (1), 168-187.
ECR fractie (2015a). ECR stemlijst, 8 september. Brussel.
ECR fractie (2015b). ECR stemlijst, 25 november. Brussel.
ECR fractie (2015c). ECR stemlijst, 2 december. Brussel.
ECR fractie (2016). ECR stemlijst, 12 april. Brussel.
Europees Parlement (2014). Rules of Procedure. Brussel.
Europees Parlement (2015a). Debat: De situatie van de grondrechten in de EU (2013-2014), 7 september. Straatsburg.
Europees Parlement (2015b). Stemverklaring: De situatie van de grondrechten in de EU (2013-2014) (A8-0230/2015 - Laura Ferrara), 8 september. Straatsburg.
Europees Parlement (2015c). Amendement 3-8; Verslag A8-0317/2015 Elisa Ferreira, Michael Theurer; Fiscale rulings en andere maatregelen van vergelijkbare aard of met vergelijkbaar effect 2015/2066(INI), 18 november. Brussel.
Europees Parlement (2015d). Amendement 9-10; Verslag A8-0317/2015 Elisa Ferreira, Michael Theurer; Fiscale rulings en andere maatregelen van vergelijkbare aard of met vergelijkbaar effect 2015/2066(INI), 18 november. Brussel.
Europees Parlement (2015e). Amendement 14-21; Verslag A8-0317/2015 Elisa Ferreira, Michael Theurer; Fiscale rulings en andere maatregelen van vergelijkbare aard of met vergelijkbaar effect 2015/2066(INI), 18 november. Brussel.
Europees Parlement (2015f). Amendement 22-31; Verslag A8-0317/2015 Elisa Ferreira, Michael Theurer; Fiscale rulings en andere maatregelen van vergelijkbare aard of met vergelijkbaar effect 2015/2066(INI), 18 november. Brussel.
Europees Parlement (2015g). Amendement 3-12; Verslag A8-0316/2015 Rachida Dati; Het voorkomen van de radicalisering en werving van Europese burgers door terroristische organisaties 2015/2063(INI), 18 november. Brussel.
Europees Parlement (2015h). Amendement 36-47; Verslag A8-0316/2015 Rachida Dati; Het voorkomen van de radicalisering en werving van Europese burgers door terroristische organisaties 2015/2063(INI), 18 november. Brussel.
Europees Parlement (2015i). Stemverklaring: Fiscale rulings en andere maatregelen van vergelijkbare aard of met vergelijkbaar effect (A8-0317/2015 - Elisa Ferreira, Michael Theurer), 25 november. Straatsburg.
Europees Parlement (2015j). Stemverklaring: Het voorkomen van de radicalisering en werving van Europese burgers door terroristische organisaties (A8-0316/2015 - Rachida Dati), 25 november. Straatsburg.
Europees Parlement (2015k). Amendement 1; Verslag A8-0343/2015 Roberta Metsola, Ska Keller; Speciaal verslag van de Europese Ombudsman betreffende het onderzoek op eigen initiatief naar Frontex (OI/5/2012/BEH-MHZ) 2014/2215(INI); 30 november. Brussel.
Europees Parlement (2015l). Stemverklaring: Speciaal verslag van de Europese Ombudsman betreffende het onderzoek op eigen initiatief naar Frontex (OI/5/2012/BEH-MHZ) (A8-0343/2015 - Roberta Metsola, Ska Keller), 2 december. Straatsburg.
Europees Parlement (2016a). Amendement 1-8; Verslag A8-0066/2016 Roberta Metsola, Kashetu Kyenge; De situatie in het Middellandse Zeegebied en de noodzaak van een holistische EU-aanpak van migratie 2015/2095(INI), 6 april. Brussel.
Europees Parlement (2016b). Stemverklaring: De situatie in het Middellandse Zeegebied en de noodzaak van een holistische EU-aanpak van migratie (A8-0066/2016 - Roberta Metsola, Kashetu Kyenge), 12 april. Straatsburg.
Faas, T. (2003). To defect or not to defect? National, institutional and party group pressures on MEPs and their consequences for party group cohesion in the European Parliament. European Journal of Political Research, 42 (6), 841-866.
Ford, R. & Goodwin, M. (2014). Understanding UKIP: Identity, Social Change and the Left Behind. The Political Quarterly, 85 (3), 277-284.
Ford, R., Goodwin, M. & Cutts, D. (2012). Strategic Eurosceptics and Polite Xenophobes: Support for the United Kingdom Independence Party (UKIP) in the 2009 European Parliament Elections. European Journal of Political Research, 51 (2), 204-234.
Gruber, O. & Bale, T. (2014). And it’s a Good Night Vienna. How (not) to Deal with the Populist Radical Right: the Conservatives, UKIP and some Lessons from the Heartland. British Politics, 9 (3), 237-254.
Hartley-Parkinson, R. (2015, 8 mei). Tories get revenge on Mark Reckless by taking seat back from UKIP. Metro.
Hayton, R. (2010). Towards the mainstream? UKIP and the 2009 Elections to the European Parliament. Politics, 30 (1), 26-35.
Hix, S. (2001). Legislative Behaviour and Party Competition in the European Parliament: An Application of Nominate to the EU. Journal of Common Market Studies, 39 (4), 663-688.
Hix, S. (2002). Parliamentary Behavior with Two Principals: Preferences, Parties, and Voting in the European Parliament. American Journal of Political Science, 46 (3), 688-698.
Hix, S., Noury, A. & Roland, G. (2005). Power to the Parties: Cohesion and Competition in the European Parliament, 1979-2001. British Journal of Political Science, 35 (2), 209-234.
Hix, S., Noury, A. & Roland, G. (2006). Dimensions of Politics in the European Parliament. American Journal of Political Science, 50 (2), 494-511.
Hix, S., Noury, A. & Roland, G. (2007). Democratic politics in the European Parliament. New York: Cambridge University Press.
James, W. & Osborn, A. (2014, 21 november). In blow to Cameron, UKIP wins second parliamentary seat. Reuters.
Jensen, C. B. & Spoon, J. J. (2010). Thinking locally, acting supranationally: Niche party behavior in the European Parliament. European Journal of Political Research, 49 (2), 174-201.
Klüver, H. & Spoon, J. J. (2015). Bringing salience back in: Explaining voting defection in the European Parliament. Party Politics, 21 (4), 553-564.
Kreppel, A. & Hix, S. (2003). From “Grand Coalition” to Left-Right Confrontation. Explaining the Shifting Structure of Party Competition in the European Parliament. Comparative Political Studies, 36 (1/2), 75-96.
Kreppel, A. & Tsebelis, G. (1999). Coalition formation in the European Parliament. Comparative Political Studies, 32 (8), 933-966.
LIBE Commissie (2015a). Verslag over de situatie van de grondrechten in de Europese Unie (2013-2014) – Rapporteur Laura Ferrara. 2014/2254(INI), Brussel.
LIBE Commissie (2015b). Verslag over het voorkomen van de radicalisering en werving van Europese burgers door terroristische organisaties – Rapporteur Rachida Dati. 2015/2063(INI), Brussel.
LIBE Commissie (2016). Verslag over de situatie in het Middellandse Zeegebied en de noodzaak van een holistische EU-aanpak van migratie – Rapporteurs Roberta Metsola & Kashetu Kyenge. 2015/2095(INI), Brussel.
LIBE Commissie & PETI Commissie (2015). Verslag over het speciaal verslag van de Europese Ombudsman betreffende het onderzoek op eigen initiatief naar Frontex (OI/5/2012/BEH-MHZ) – Rapporteurs Roberta Metsola & Ska Keller. 2014/2215(INI), Brussel.
Lynch, P. & Whitaker, R. (2011). Explaining support for the UK Independence Party at the 2009 European Parliament elections. Journal of Elections, Public Opinion and Parties, 21 (3), 359-379.
Lynch, P. & Whitaker, R. (2013). Rivalry on the Right: the Conservatives, the UK Independence Party (UKIP) and the EU Issue. British Politics, 8 (3), 285-312.
Lynch, P. & Whitaker, R. (2014). Understanding the Formation and Actions of Eurosceptic Groups in the European Parliament: Pragmatism, Principles and Publicity. Government and Opposition, 49 (2), 232-263.
Lynch, P., Whitaker, R. & Loomes, G. (2012). The UK Independence Party: Understanding a Niche Party’s Strategy, Candidates and Supporters. Parliamentary Affairs, 65 (4), 733-757.
Maerevoet, E., Arnoudt, R. & Segers, F. (2016, 18 maart). Akkoord over vluchtelingen tussen EU en Turkije is rond. De Redactie.be.
Mason, R. (2015, 16 juni). Ex-UKIP Janice Atkinson joins Le Pen-led EU group. The Guardian.
Mason, R. (2016, 22 februari). Who are the Tory MPs on each side of the EU debate? The Guardian.
McElroy, G. & Benoit, K. (2007). Party Groups and Policy Positions in the European Parliament. Party Politics, 13 (1), 5-28.
McElroy, G. & Benoit, K. (2012). Policy Positioning in the European Parliament. European Union Politics, 13 (1), 150-167.
Minten, D. (2015, 25 april). ‘Je kan Cameron niet vertrouwen’. De Standaard.
Pidd, H. & Watt, N. (2014, 10 oktober). Clacton byelection: Douglas Carswell wins UKIP’s first parliamentary seat. The Guardian.
Prodi, R. (2002). The EU, the UK and the World. Geraadpleegd op 12 april 2015 op:
http://europa.eu/rapid/press-release_SPEECH-02-186_en.htm.
Raunio, T. (2000). Losing Independence or Finally Gaining Recognition? Contacts Between MEPs and National Parties. Party Politics, 6 (2), 211-223.
Rettman, A. (2015, 15 juni). Far-right parties form group in EU parliament. EUobserver.
Ross, T. (2015, 24 januari). UKIP MEP Amjad Bashir defects to Conservative Party. The Guardian.
Staffordshire Newsletter (2015, 14 januari). New West Midlands Conservative MEP elected following the death of Philip Bradbourn. Staffordshire Newsletter.
TAXE Commissie (2015). Verslag over fiscale rulings en andere maatregelen van vergelijkbare aard of met vergelijkbaar effect – Rapporteurs Elisa Ferreira & Michael Theurer. 2015/2066(INI), Brussel.
The Secretary General (2014). Strategic Planning for the Secretariat-General of the European Parliament. Brussel.
Thillaye, R. (2014). British Political Parties in Europe. Reliable, Ambiguous, Reluctant and Dismissive (Policy Paper). Londen: Policy Network.
Tournier-Sol, K. (2015). Reworking the Eurosceptic and Conservative Traditions into a Populist Narrative: UKIP’s Winning Formula? Journal of Common Market Studies, 53 (1), 140-156.
Treib, O. (2014). The voter says no, but nobody listens: causes and consequences of the Eurosceptic vote in the 2014 European elections. Journal of European Public Policy, 21 (10), 1541-1554.
“Ukip's David Campbell Bannerman explains why the party cannot deliver” (2014, 16 april). The Telegraph.
Usherwood, S. (2008). The dilemmas of a single-issue party: The UK Independence Party. Working paper, geraadpleegd op 13 april 2015 op:
http://epubs.surrey.ac.uk/235575/3/The%20dilemmas%20of%20a%20single%20i….
Usherwood S. (2010). UKIP's Political Strategy: Opportunistic Idealism in a Fragmented Political Arena. Bruges, Belgium: University Association for Contemporary European Studies.
VoteWatch Europe (2016). Votes by political groups – European energy security strategy. Geraadpleegd op 22 april 2016 op:
http://www.votewatch.eu/en/term8-european-energy-security-strategy-moti….
VoteWatch Europe (2016). Votes by political groups – European Semester for economic policy coordination: implementation of 2015 priorities. Geraadpleegd op 22 april 2016 op: http://www.votewatch.eu/en/term8-european-semester-for-economic-policy-….
VoteWatch Europe (2016). MEPs by Member State and political group. Geraadpleegd op 24 april 2016 op:
http://www.votewatch.eu/en/term8-european-party-groups.html.
Watt, N. & Wintour P. (2014, 26 mei). UKIP wins European elections with ease to set off political earthquake. The Guardian.
www.efddgroup.eu, geraadpleegd op 24 april 2016.
www.europarl.europa.eu, geraadpleegd in februari, maart en april 2016.
www.guengl.eu, geraadpleegd op 15 april 2016.
www.votewatch.eu, geraadpleegd in februari, maart en april 2016.