APA (7th ed.) Citation

United States. Department of Agriculture. Office of the Secretary, Clawson, A. B., & Marsh, C. D. (1920). Astragalus tetrapterus, new poisonous plant of Utah and Nevada. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Department of Agriculture. Office of the Secretary, A. B. Clawson, and C. Dwight Marsh. Astragalus Tetrapterus, New Poisonous Plant of Utah and Nevada. Washington: U.S. GPO, 1920.

MLA (9th ed.) Citation

United States. Department of Agriculture. Office of the Secretary, et al. Astragalus Tetrapterus, New Poisonous Plant of Utah and Nevada. U.S. GPO, 1920.