APA (7th ed.) Citation

United States. Department of Agriculture. Office of the Secretary, Clawson, A. B., Marsh, C. D., & Marsh, H. (1915). Zygadenus, or death camas. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Department of Agriculture. Office of the Secretary, A. B. Clawson, C. Dwight Marsh, and Hadleigh Marsh. Zygadenus, or Death Camas. Washington: U.S. GPO, 1915.

MLA (9th ed.) Citation

United States. Department of Agriculture. Office of the Secretary, et al. Zygadenus, or Death Camas. U.S. GPO, 1915.