Παραπομπή σε μορφή APA (7η εκδ.)

Kohls, R. L. (1972). Marketing of agricultural products / Richard L. Kohls, W. David Downey (4th ed.). Tejano Pub. Corp.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Kohls, Richard L. Marketing of Agricultural Products / Richard L. Kohls, W. David Downey. 4th ed. Manila: Tejano Pub. Corp, 1972.

Παραπομπή σε μορφή MLA (9th εκδ.)

Kohls, Richard L. Marketing of Agricultural Products / Richard L. Kohls, W. David Downey. 4th ed. Tejano Pub. Corp, 1972.