Cita APA (7a ed.)

Zimdahl, R. L. (1980). Weed-crop competition: A review. International Plant Protection Center.

Cita Chicago Style (17a ed.)

Zimdahl, Robert L. Weed-crop Competition: A Review. Corvallis: International Plant Protection Center, 1980.

Cita MLA (9a ed.)

Zimdahl, Robert L. Weed-crop Competition: A Review. International Plant Protection Center, 1980.