Billiet, J.B. (1997). Political parties and social organizations in Flanders. In J. W. Van Deth (Ed.), Private groups and public life. Social participation, voluntary associations and political involvement in representative democracies (pp. 64-81). London: Roudledge.
2.
Dekker, P., & Halman, L. (Eds.). (2003). The values of volunteering: Cross-cultural perspectives. New York: Kluwer Academic/Plenum.
3.
Halfpenny, P. (1999). Economic and sociological theories of individual charitable giving: Complementary or contradictory?Voluntas: International Journal of Voluntary and Nonprofit Organizations, 10(3), 197-215.
4.
Healy, K. (2000). Embedded altruism: Blood collection regimes and the European Union’s donor population. American Journal of Sociology, 105(6), 1633-1657.
5.
Hustinx, L., & Lammertyn, F. (2003). Collective and reflexive styles of volunteering: Asociological modernization perspective. Voluntas: International Journal of Voluntary and Nonprofit Organizations, 14(2), 167-187.
6.
Inglehart, R. (1977). The silent revolution: Changing values and political styles among Western publics. Princeton, NJ: Princeton University Press.
7.
Inglehart, R. (1997). Modernization and postmodernization. Princeton, NJ: Princeton University Press.
8.
Lijphart, A. J. (1968). The politics of accommodation. Pluralism and democracy in the Netherlands. Berkeley: University of California Press.
9.
Olson, M. (1965). The logic of collective action: Public goods and the theory of groups. Cambridge, MA: Harvard University Press.
10.
Wilson, J. (2000). Volunteering. Annual Review of Sociology, 26, 215-240.