United States. Department of Agriculture. Office of the Secretary & Pirtle, T. R. (1919). Trend of dairy-cattle industry in U.S. and other countries; simple charts with interpretations. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of Agriculture. Office of the Secretary and T. R. Pirtle. Trend of Dairy-cattle Industry in U.S. and Other Countries; Simple Charts with Interpretations. Washington: U.S. GPO, 1919.
MLA (9th ed.) CitationUnited States. Department of Agriculture. Office of the Secretary and T. R. Pirtle. Trend of Dairy-cattle Industry in U.S. and Other Countries; Simple Charts with Interpretations. U.S. GPO, 1919.
Warning: These citations may not always be 100% accurate.