APA (7th ed.) Citation

Hanson, A. A., Barnes, D. K., & Hill, R. R. (1988). Alfalfa and alfalfa improvement. American Society of Agronomy.

Chicago Style (17th ed.) Citation

Hanson, A. A., D. K. Barnes, and R. R. Hill. Alfalfa and Alfalfa Improvement. Madison, Wis., USA: American Society of Agronomy, 1988.

MLA (9th ed.) Citation

Hanson, A. A., et al. Alfalfa and Alfalfa Improvement. American Society of Agronomy, 1988.