APA (7th ed.) Zitazioa

SIMMONS, I. G. (1981). The Ecology of natural resources. Edward Arnold.

Chicago Style (17th ed.) Zitazioa

SIMMONS, I. G. The Ecology of Natural Resources. London: Edward Arnold, 1981.

MLA (9th ed.) Zitazioa

SIMMONS, I. G. The Ecology of Natural Resources. Edward Arnold, 1981.