United States. Department of Agriculture. (1931). Information for guidance of field men and cooperators of Bureau of Biological Survey engaged in control of injurious rodents and predatory animals. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of Agriculture. Information for Guidance of Field Men and Cooperators of Bureau of Biological Survey Engaged in Control of Injurious Rodents and Predatory Animals. [Washington]: GPO, 1931.
MLA (9th ed.) CitationUnited States. Department of Agriculture. Information for Guidance of Field Men and Cooperators of Bureau of Biological Survey Engaged in Control of Injurious Rodents and Predatory Animals. GPO, 1931.
Warning: These citations may not always be 100% accurate.