APA (7th ed.) Citation

American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, & Stelly, M. (1976). Biological N fixation in forage-livestock systems: Proceedings of a symposium. American Society of Agronomy.

Chicago Style (17th ed.) Citation

American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, and Matthias Stelly. Biological N Fixation in Forage-livestock Systems: Proceedings of a Symposium. Madison, Wis.: American Society of Agronomy, 1976.

MLA (9th ed.) Citation

American Society of Agronomy, et al. Biological N Fixation in Forage-livestock Systems: Proceedings of a Symposium. American Society of Agronomy, 1976.