APA (7th ed.) Citation

Soil Science Society of America. Division S-4, Crop Science Society of America. Division C-6, American Society of Agronomy, Welch, R. M., & Gabelman, W. H. (1984). Crops as sources of nutrients for humans: Proceedings of a symposium. Soil Science Society of America.

Chicago Style (17th ed.) Citation

Soil Science Society of America. Division S-4, Crop Science Society of America. Division C-6, American Society of Agronomy, R. M. Welch, and W. H. Gabelman. Crops as Sources of Nutrients for Humans: Proceedings of a Symposium. Madison, Wis.: Soil Science Society of America, 1984.

MLA (9th ed.) Citation

Soil Science Society of America. Division S-4, et al. Crops as Sources of Nutrients for Humans: Proceedings of a Symposium. Soil Science Society of America, 1984.