Cita APA (7a ed.)

Kohls, R. L., & Downey, W. D. (1972). Marketing of agricultural products (4th ed.). Macmillan.

Cita Chicago Style (17a ed.)

Kohls, Richard L., y W. David Downey. Marketing of Agricultural Products. 4th ed. New York: Macmillan, 1972.

Cita MLA (8a ed.)

Kohls, Richard L., y W. David Downey. Marketing of Agricultural Products. 4th ed. Macmillan, 1972.