APA Citatie

Simmons, I. G. (1981). ecology of natural resources (2nd ed.). English Language Book Society.

Chicago Style citaat

Simmons, I G. Ecology of Natural Resources. 2nd ed. London: English Language Book Society, 1981.

MLA citatie

Simmons, I G. Ecology of Natural Resources. 2nd ed. English Language Book Society, 1981.

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