Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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