Falk, N. (1992). Voluntary work and the environment: Local environmental development initiatives in Europe. Office for Official Publications of the European Communities.
Citazione stile Chigago Style (17a edizione)Falk, Nicholas. Voluntary Work and the Environment: Local Environmental Development Initiatives in Europe. Luxembourg: Office for Official Publications of the European Communities, 1992.
Citatione MLA (9a ed.)Falk, Nicholas. Voluntary Work and the Environment: Local Environmental Development Initiatives in Europe. Office for Official Publications of the European Communities, 1992.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.