Bibliography:
- Adams, J., Clark, M., Ezrow, L. a Glasgow, G. (2006), ‘Are niche parties fundamentally different from mainstream parties? The causes and the electoral consequences of western European parties’ policy shifts, 1976-1998’, American Journal of Political Science, 50: 3, 513–29.
- Barreiro Rivas, X. L. (2003), ‘Da UPG ao BNG: O proceso organizativo do nacionalismo galego’, yn X. M. Rivera Otero (gol.), Os Partidos Políticos en Galicia (Vigo: Edicións Xerais de Galicia).
- BBC (2005), ‘Plaid rejects assembly coalition’, 20 Mehefin 2005. Ar gael ar: http://news.bbc. co.uk/1/hi/wales/4113114.stm (darllenwyd 20 Mai 2009).
- BBC (2009), ‘Student top-up fees split Plaid’, 22 Chwefror 2009. Ar gael ar: http://news.bbc. co.uk/1/hi/wales/7904549.stm (darllenwyd 27 Mai 2009).
- Beramendi, J. G. a Núñez Seixas, X.M. (1996), O Nacionalismo Galego (Santiago de Compostela: A Nosa Terra).
- Clarke, H. D., Sanders, D., Stewart, M. C. a Whitely, P. (2009), Performance Politics and the British Voter (Caergrawnt: Gwasg Prifysgol Caergrawnt).
- Deschouwer, K. (2003) ‘Political parties in multi-layered systems’, European Urban and Regional Studies, 10: 2, 213-26.
- Deschouwer, K. (2008), New Parties in Government (Llundain: Routledge).
- Elias, A. (2008), Minority Nationalist Parties and European Integration: A Comparative Study (Llundain: Routledge).
- Elias, A. (2011), ‘Plaid Cymru’, yn A. Elias a F. Tronconi (goln.), From Protest to Power: Autonomist Parties and the Challenges of Representation (Awstria: Wilhelm Braumüller).
- Elias, A. a Tronconi, F. (i ddod, 2011), ‘From protest to power: Autonomist parties in government’, Party Politics.
- Elis Thomas, D. (2004), ‘No room for nationalism’, Epolitix, 16 Medi 2004. Ar gael ar: www. dodonline.co.uk/engine.asp?lev1=4&lev2=38&menu=71&showPage=article&id=135&artic le_display=all [Cyrchwyd 10 Tachwedd 2008].
- Fabre, E., Maddens, B., Swenden, W., et al. (2005), ‘Partis politiques nationaux en crise? Organisation des partis et décentralisation. Une comparaison de l’Espagne et du Royaume Uni’, Res Publica, 47: 1, 36–57.
- Fernán-Vello, M. A. a Pillado Mayor, F. (2004) A Estrela na Palabra. Novas Conversas con Xosé Manuel Beiras (A Coruña: Edicións Laiovento).
- Gómez-Reino, M. (2011), ‘The Bloque Nacionalista Gallego’, yn A. Elias a F. Tronconi (goln.), From Protest to Power: Autonomist Parties and the Challenges of Representation (Awstria: Wilhelm Braumüller).
- Harmel, R. a Janda, K. (1994) ‘An integrated theory of party goals and party change’, Journal of Theoretical Politics, 6: 3, 259–87.
- Harmel, R., Heo, U., Tan, A., et al. (1995), ‘Performance, leadership, factions and party change: an empirical analysis’, West European Politics, 18: 1, 1–33.
- Heinisch, R. (2003), ‘Success in opposition – failure in government: explaining the performance of right-wing populist parties in public office’, West European Politics, 26: 3, 91–130.
- Hopkin, J. a Bradbury, J. (2006), ‘British statewide parties and multi-level politics’, Publius: The Journal of Federalism, 36: 1, 135-52.
- Hough, D. a Jeffery, C. (2006), ‘An introduction to multi-level electoral competition’, yn D. Hough a C. Jeffery (goln), Devolution and Electoral Politics (Manceinion: Gwasg Prifysgol Manceinion), tt.2–13.
- Jiménez Sánchez, F. (2003) ‘O PSdeG-PSOE (1973–2001): ‘Un caso de débil institucionalización’, yn X.M. Rivera Otero (gol.), Os Partidos Políticos en Galicia (Vigo: Edicións Xerais de Galicia).
- Keating, M. (2001), Nations Against the State, The New Politics of Nationalism in Quebec, Catalonia and Scotland (Basingstoke: Palgrave).
- Lagares Díez, N. (2003), ‘O Partido Popular de Galicia’, yn X.M. Rivera Otero (gol.), Os Partidos Políticos en Galicia (Vigo: Edicións Xerais).
- Lynch, P. (2011), ‘The Scottish National Party’, yn A. Elias a F. Tronconi (goln), From Protest to Power: Autonomist Parties and the Challenges of Representation (Awstria: Wilhelm Braumüller).
- Mair, P. (2001), ‘The green challenge and political competition: how typical is the German experience’, German Politics, 10: 2, 99–116.
- Meguid, B. (2005), ‘Competition between unequals: the role of mainstream party strategy in niche party success’, American Political Science Review, 99: 3, 347–58.
- Melding, D. (2003), New Dawn or Sunset Boulevard – What Role for the Welsh Conservative Party?, Araith Flynyddol Sefydliad Gwleidyddiaeth Cymru, Prifysgol Aberystwyth, 27 Hydref 2003.
- Moreno, L. (2001), The Federalization of Spain (London: Routledge).
- Müller-Rommel, F. (2002), ‘The lifespan and the political performance of Green Parties in Western Europe’, Environmental Politics, 11: 1, 1–13.
- Müller-Rommel, F. a Pridham, G. (1991), Small Parties in Western Europe (Llundain: Sage).
- Osmond, J. (2007), Crossing the Rubicon: Coalition Politics Welsh-style (Caerdydd: Sefydliad Materion Cymreig).
- Pallarès, F. (2002), ‘Las elecciones autonómicas gallegas de 2001’, yn Instituto de Derecho Público, Informe Comunidades Autónomas 2001 (Barcelona: Instituto de Derecho Público), tt.607–25.
- Pallarès, F., Lago, I. a Muñoz, J. (2006), ‘The 2005 autonomous election in Galicia: The end of conservative hegemony’, Regional and Federal Studies, 16: 4, 481–94.
- Patchett, K. (2003), ‘The new constitutional architecture’, yn J. Osmond a J. Barry Jones (goln), Birth of Welsh Democracy: The First Term of the National Assembly for Wales (Caerdydd: Sefydliad Materion Cymreig).
- Pedersen, M. (1982), ‘Towards a new typology of party life-spans and minor parties’, Scandinavian Political Studies, 5: 1, 1–16.
- Plaid Cymru (1999) Maniffesto Plaid Cymru 1999 (Caerdydd: Plaid Cymru).
- Plaid Cymru (2007) Gwna Wahaniaeth! Manifesto Plaid Cymru 2007 (Caerdydd: Plaid Cymru).
- Poguntke, T. (2002), ‘Green parties in national governments: from protest to acquiescence?’, Environmental Politics, 11: 1, 133–45.
- Rihoux, B. a Rüdig, W. (2006), ‘Analyzing Greens in power: setting the agenda’, European Journal of Political Research, 45: s1, 1–33.
- Sartori, G. (1976), Parties and Party Systems. A Framework for Analysis (Caergrawnt: Gwasg Prifysgol Caergrawnt).
- Strøm, K. (1990), ‘A behavioral theory of competitive political parties’, American Journal of Political Science, 34: 2, 565–98.
- Strøm, K. a Müller, W. (1999), ‘Political parties and hard choices’, yn K. Strøm a W. Müller (goln), How Political Parties in Western Europe Make Hard Decisions (Caergrawnt: Gwasg Prifysgol Caergrawnt), tt.1–35.
- Taggart, P. (1998) ‘A touchstone of dissent: Euroscepticism in contemporary west European party systems’, European Journal of Political Research, 33, 363–88.
- Taylor, G. (2004) ‘Political parties’, yn J. Osmond (gol.), End of the Corporate Body. Monitoring the National Assembly for Wales, December 2003–March 2004 (Caerdydd: Sefydliad Materion Cymreig).
- Western Mail (2008) ‘Race against time for early referendum’, Western Mail, 14 Mawrth 2008.
- Wyn Jones, R. (2007), Rhoi Cymru’n Gyntaf: Syniadaeth Plaid Cymru (Caerdydd: Gwasg Prifysgol Cymru).
- Wyn Jones, R. a Scully, R. (2004), ‘Must Plaid lose?’, Agenda, Haf 2006: 60–62.
- Wyn Jones, R. a Scully, R. (2008), Wales Devolution Monitoring Report: January 2008 (Llundain: Constitution Unit).
- Wyn Jones, R. a Trystan, D. (2000) ‘A “quiet earthquake”: the first national elections to the National Assembly for Wales’, CREST Working Paper, rhif 85, Medi 2000.