Jalali, Carlos (2019), “The Portuguese Party System: Evolution in Continuity?”, in António Costa Pinto e Conceição Pequito Teixeira (orgs), Political Institutions and Democracy in Portugal: Assessing the Impact of the Eurocrisis, London, Palgrave.
Lopes, Fernando Farelo (2007), “Os Partidos Políticos: famílias, ideologias e relações com os grupos de pressão”. Finisterra, 58/59/60, 47-65.
Mair, Peter (2004), Party System Change: Approaches and Interpretations, Oxford, Oxford University Press (Capítulo 9: “Party systems and structures of competition”).
Mair, Peter (2006), “Party system change”, in Richard Katz & William Crotty (orgs, 2006), Handbook of Party Politics, London, Sage Publications.
Lisi, Marco (2019, org), Grupos de Interesse e Crise Económica em Portugal, Lisboa, Sílabo (Capítulo: Introdução).
Ware, Alan (1996), Political Parties and Party Systems, Oxford, Oxford University Press (Capítulos: Introdução e Capítulo 1).:
Secundária
Coroado, Susana (2017), O Grande Lóbi, Lisboa, Objectiva.
Hazan, Reuven e Gideon Rahat (2006), “Candidate Selection: Methods and Consequences”, in Richard Katz e William Crotty (2006, orgs), Handbook of Party Politics, Londres, Sage Publications.
Katz, Richard e Peter Mair (1995), "Changing models of party organization and party democracy: the emergence of the cartel party". Party Politics 1 (1), pp. 5-28.
Lijphart, Arend (2012), Patterns of Democracy, New Haven, Yale University Press
(Capítulo 9: “Interest Groups: Pluralism Versus Corporatism”).
Lisi, Marco (2011), Os Partidos em Portugal: continuidade e transformação, Lisboa, Almedina (Capítulo: Introdução).
Mair, Peter (1990, org), The West European Party System, Oxford, Oxford University Press (Vários capítulos, ver Planeamento da UC).
Mainwaring, Scott e Timothy R. Scully (1995). ”Introduction: Party systems in Latin America”, in Mainwaring, Scott e Timothy R. Scully, Building Democratic Institutions: Party Systems in Latin America, Redwood City, Stanford University Press.
Sanches, Edalina (2018), Party Systems in Young Democracies: Varieties of institutionalization in Sub-Saharan Africa, Londres, Routledge.
Siaroff, Alan (1999) "Corporatism in 24 Democracies: Meaning and Measurement". European Journal of Political Research 36: 175-205.
Scarrow, Susan (2015), Beyond Party Members: Changing Approaches to Partisan Mobilization, Oxford, Oxford University Press.: