APA (7th ed.) Zitazioa

HARDIN, C. M. (1952). The Politics of agriculture: Soil conservation and the struggle. The Free Pr..

Chicago Style (17th ed.) Zitazioa

HARDIN, Charles M. The Politics of Agriculture: Soil Conservation and the Struggle. Illinois: The Free Pr., 1952.

MLA (9th ed.) Zitazioa

HARDIN, Charles M. The Politics of Agriculture: Soil Conservation and the Struggle. The Free Pr., 1952.