Não informado. Milk Production. U.S. Department of Agriculture, Agricultural Marketing Service.
Chicago-Zitierstil (17. Ausg.)Não informado. Milk Production. Washington: U.S. Department of Agriculture, Agricultural Marketing Service.
MLA-Zitierstil (8. Ausg.)Não informado. Milk Production. U.S. Department of Agriculture, Agricultural Marketing Service.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.