APA (7th ed.) Citation

United States. Department of Agriculture. (1977). Official Dairy Herd Improvement rules.

Chicago Style (17th ed.) Citation

United States. Department of Agriculture. Official Dairy Herd Improvement Rules. 1977.

MLA (9th ed.) Citation

United States. Department of Agriculture. Official Dairy Herd Improvement Rules. 1977.

Warning: These citations may not always be 100% accurate.