APA استشهاد

Neher, P. A. (1990). Natural resource economics: Conservation and exploitation. Cambrige University Press.

استشهاد بنمط شيكاغو

Neher, Philip A. Natural Resource Economics: Conservation and Exploitation. New York: Cambrige University Press, 1990.

MLA استشهاد

Neher, Philip A. Natural Resource Economics: Conservation and Exploitation. Cambrige University Press, 1990.