Milk production / Crop Reporting Board, Economics, Statistics, & Cooperatives Service, U.S. Department of Agriculture.
Chicago-referens (17:e uppl.)Milk Production / Crop Reporting Board, Economics, Statistics, & Cooperatives Service, U.S. Department of Agriculture.
MLA-referens (9:e uppl.)Milk Production / Crop Reporting Board, Economics, Statistics, & Cooperatives Service, U.S. Department of Agriculture.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.