Birg, H., Fritsch, B., & Hösle, V. (1995). Population, Environment and Sustainable Livelihood: Proceedings of Symposion V, Session 2 of the World Congress of Sociology, held at the University of Bielefeld, July 18-23, 1994.
Chicago-referens (17:e uppl.)Birg, Herwig, Bruno Fritsch, och Vittorio Hösle. Population, Environment and Sustainable Livelihood: Proceedings of Symposion V, Session 2 of the World Congress of Sociology, Held at the University of Bielefeld, July 18-23, 1994. Bielefeld, 1995.
MLA-referens (8:e uppl.)Birg, Herwig, et al. Population, Environment and Sustainable Livelihood: Proceedings of Symposion V, Session 2 of the World Congress of Sociology, Held at the University of Bielefeld, July 18-23, 1994. 1995.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.