Cita APA (7th ed.)

Kohls, R. (2002). Marketing of agricultura; products (9th.). Prentice Hall.

Cita Chicago (17th ed.)

Kohls, Rochard. Marketing of Agricultura; Products. 9th. New Delhi: Prentice Hall, 2002.

Cita MLA (9th ed.)

Kohls, Rochard. Marketing of Agricultura; Products. 9th. Prentice Hall, 2002.