Cita APA

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

Citación estilo Chicago

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

Cita MLA

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