United States. Department of Agriculture. (1930). Anthelmintics for removal of thorn-headed worms from swine. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of Agriculture. Anthelmintics for Removal of Thorn-headed Worms from Swine. [Washington]: GPO, 1930.
MLA (9th ed.) CitationUnited States. Department of Agriculture. Anthelmintics for Removal of Thorn-headed Worms from Swine. GPO, 1930.
Warning: These citations may not always be 100% accurate.