Citazione Stile APA (7a Edizione)

Kohls, R. L. (1967). Marketing of Agricultural products (3rd ed.). Collier- Macmillan.

Citazione stile Chigago Style (17a edizione)

Kohls, Richard L. Marketing of Agricultural Products. 3rd ed. London: Collier- Macmillan, 1967.

Citatione MLA (9a ed.)

Kohls, Richard L. Marketing of Agricultural Products. 3rd ed. Collier- Macmillan, 1967.