Norris, P. (2002): Democratic Phoenix: Reinventing Political Activism, New York, Cambridge University Press.
Norris, P. (2003): Young People and Political Activism: From the Politics Loyalties to the Politics of Choice? Report for the Council of Europe Symposium: Young people and democratic institutions: from disillusionment to participation. November 27-28, November.
Putnam, R. (1995): Bowling Alone: America’s Declining Social Capital, Journal of Democracy, Vol. VI, No. 1, pp. 65-78.
Putnam, R. (2000): Bowling Alone: The Collapse and Revival of American Community, New York, Simon and Schuster.
Rosenstone, S. J. – Hansen, J. M. (2003, eds.): Mobilization, Participation, and Democracy in America, New York, Longman.
Verba, S. – Shlozman, K. L. – Brady, H. E. (1995): Voice and Equality: Civic Voluntarism in American Politics, Cambridge, Mass, Harvard University Press.
Verba, S. – Nie, N. – Kim, J. (1978): Participation and Political Equality: A Seven-Nation Comparison, New York, Cambridge University Press.