APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

American Society of Agronomy, A. A. Hanson, D.K Barnes, and Richard Ray Hill. Alfalfa and Alfalfa Improvement. Madison: American Society of Agronomy [etc.], 1988.

MLA (9th ed.) Citation

American Society of Agronomy, et al. Alfalfa and Alfalfa Improvement. American Society of Agronomy [etc.], 1988.