Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Kohls, R.L, y W.D Downey. Marketing of Agricultural Products. 4th edition. New York: Macmillan, 1972.

Cita MLA (8a ed.)

Kohls, R.L, y W.D Downey. Marketing of Agricultural Products. 4th edition. Macmillan, 1972.