Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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