Tohutoro APA (7th ed.)

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

Tohutoru Kātū Chicago (17th ed.)

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

Tohutoro MLA (9th ed.)

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