Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.