APA (7th ed.) Citation

United States. Department of Agriculture, United States. Agricultural Research Service, & United States. Extension Service. (1976). Wheat variety handbook. Dept. of Agriculture.

Chicago Style (17th ed.) Citation

United States. Department of Agriculture, United States. Agricultural Research Service, and United States. Extension Service. Wheat Variety Handbook. Washington: Dept. of Agriculture, 1976.

MLA (9th ed.) Citation

United States. Department of Agriculture, et al. Wheat Variety Handbook. Dept. of Agriculture, 1976.