APA (7e ed.) Bronvermelding

Não informado. (1994). International Journal of Sustainable Development and World Ecology. Parthenon Publishing.

Chicago (17e ed.) Bronvermelding

Não informado. International Journal of Sustainable Development and World Ecology. Lancs, Inglaterra: Parthenon Publishing, 1994.

MLA (8e ed.) Bronvermelding

Não informado. International Journal of Sustainable Development and World Ecology. Parthenon Publishing, 1994.

Let op: Deze citaties zijn niet altijd 100% accuraat.