APA (7th ed.) Zitazioa

Hartwick John M & Olewiler, N. D. (1986). The economics of natural resource use. Harper and Row.

Chicago Style (17th ed.) Zitazioa

Hartwick John M eta Nancy D. Olewiler. The Economics of Natural Resource Use. New York: Harper and Row, 1986.

MLA (9th ed.) Zitazioa

Hartwick John M eta Nancy D. Olewiler. The Economics of Natural Resource Use. Harper and Row, 1986.