The Oxford Handbook of Portuguese Politics (Oxford: Oxford University Press, 2024) (co-edited).
Latin American Dictatorships in the Era of Fascism: The Corporatist Wave (London: Routledge, 2020).
Political Institutions and Democracy in Portugal: Assessing the Impact of the Eurocrisis (Cham: Palgrave Macmillan, 2019).
Authoritarianism and Corporatism in Europe and Latin America: Crossing Borders (London: Routledge, 2019) (edited with Federico Finchelstein).
Corporatism and Fascism. The Corporatist Wave in Europe (London: Routledge, 2017).
The Ends of European Colonial Empires: Cases and Comparisons (Cambridge Imperial and Post-Colonial Studies Series) (Hampshire: Palgrave Macmillan, 2015)(edited with Miguel Bandeira Jerónimo).[2]
Rethinking Fascism and Dictatorship in Europe (Hampshire: Palgrave Macmillan, 2014)(edited with Aristotle Kallis).
The Portuguese Republic at One Hundred (Berkeley: Institute of European Studies-UC Berkeley, 2012).[3]
The Nature of Fascism Revisited (New York, NY: SSM-Columbia University Press, 2012).
The Europeanization of Portuguese Democracy (New York, NY: SSM-Columbia University Press, 2012) (edited with Nuno Severiano Teixeira).
Dealing with the Legacy of Authoritarianism: The "Politics of the Past" in Southern European Democracies (London: Routledge, 2011) (edited with Leonardo Morlino).
Rethinking the Nature of Fascism (New York, NY: Palgrave Macmillan, 2011).
Contemporary Portugal. Politics, society and culture, 2nd Edition (New York, NY: SSM-Columbia University Press, 2011).
Ruling Elites and Decision-Making in Fascist-Era Dictatorships (New York, NY: SSM-Columbia University Press, 2009).
Charisma and Fascism in Inter-war Europe (London: Routledge, 2007) (edited with Roger Eatwell and Stein U. Larsen).
The Last Empire: Thirty Years of Portuguese Decolonisation (Bristol: Intellect, 2003) (edited with Stewart Lloyd-Jones).
Who Governs Southern Europe? Regime Change and Ministerial Recruitment (London: Routledge, 2003) (edited with Pedro Tavares de Almeida and Nancy Bermeo).
Southern Europe and the Making of the European Union (New York, NY: SSM-Columbia University Press, 2003) (edited with Nuno Severiano Teixeira).
The Blue Shirts: Portuguese Fascism in Inter-war Europe (New York, NY: SSM-Columbia University Press, 2000).
Salazar’s Dictatorship and European Fascism: Problems of Interpretation (New York, NY: SSM-Columbia University Press, 1995).