APA (7th ed.) Zitazioa

Tisdell, C. A. (1991). Economics of environmental conservation. Elsevier.

Chicago Style (17th ed.) Zitazioa

Tisdell, Clement Allan. Economics of Environmental Conservation. Amsterdam: Elsevier, 1991.

MLA (9th ed.) Zitazioa

Tisdell, Clement Allan. Economics of Environmental Conservation. Elsevier, 1991.