Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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