Falk, N. (1992). Voluntary work and the environment: Local environmental development initiatives in Europe. Office for Official Publications of the European Communities.
Chicago-Zitierstil (17. Ausg.)Falk, Nicholas. Voluntary Work and the Environment: Local Environmental Development Initiatives in Europe. Luxembourg: Office for Official Publications of the European Communities, 1992.
MLA-Zitierstil (9. Ausg.)Falk, Nicholas. Voluntary Work and the Environment: Local Environmental Development Initiatives in Europe. Office for Official Publications of the European Communities, 1992.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.