Kohls, R. L. (1961). Marketing of agricultural products (3rd. ed.). Macmillan Company.
Cita Chicago Style (17a ed.)Kohls, Richard L. Marketing of Agricultural Products. 3rd. ed. New York: Macmillan Company, 1961.
Cita MLA (9a ed.)Kohls, Richard L. Marketing of Agricultural Products. 3rd. ed. Macmillan Company, 1961.
Precaución: Estas citas no son 100% exactas.