United States. Division of Dairy Herd Improvement Investigations. (1950). List of sires proved in dairy-herd-improvement associations, 1950. U.S. Dept. of Agriculture.
Chicago Style (17th ed.) CitationUnited States. Division of Dairy Herd Improvement Investigations. List of Sires Proved in Dairy-herd-improvement Associations, 1950. Washington, D.C.: U.S. Dept. of Agriculture, 1950.
MLA (9th ed.) CitationUnited States. Division of Dairy Herd Improvement Investigations. List of Sires Proved in Dairy-herd-improvement Associations, 1950. U.S. Dept. of Agriculture, 1950.
Warning: These citations may not always be 100% accurate.