Cita APA

Simmons, I. G. (1981). The ecology of natural resources (2a. ed.). Edward Arnold.

Citación estilo Chicago

Simmons, I. G. The Ecology of Natural Resources. 2a. ed. Londres: Edward Arnold, 1981.

Cita MLA

Simmons, I. G. The Ecology of Natural Resources. 2a. ed. Edward Arnold, 1981.