United States. Department of Agriculture. Office of the Secretary, Clawson, A. B., & Marsh, C. D. (1923). Livestock poisoning by cocklebur. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of Agriculture. Office of the Secretary, A. B. Clawson, and C. Dwight Marsh. Livestock Poisoning by Cocklebur. Washington: U.S. GPO, 1923.
MLA (9th ed.) CitationUnited States. Department of Agriculture. Office of the Secretary, et al. Livestock Poisoning by Cocklebur. U.S. GPO, 1923.
Warning: These citations may not always be 100% accurate.