Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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