Cita APA (7a ed.)

Ahlgren, G. H., Klingman, G. C., & Wolf, D. E. (1951). Principles of weed control. John Wiley.

Cita Chicago Style (17a ed.)

Ahlgren, Gilbert H., Glenn C. Klingman, y Dale E. Wolf. Principles of Weed Control. New York: John Wiley, 1951.

Cita MLA (8a ed.)

Ahlgren, Gilbert H., et al. Principles of Weed Control. John Wiley, 1951.