Παραπομπή APA

Dungan, G. H., & Ross, W. A. (1957). Growing field crops. Mc Graw- Hill Book Company Inc.

Παραπομπή Chicago Style

Dungan, George H., και W A. Ross. Growing Field Crops. New York: Mc Graw- Hill Book Company Inc, 1957.

Παραπομπή MLA

Dungan, George H., και W A. Ross. Growing Field Crops. Mc Graw- Hill Book Company Inc, 1957.