Não informado. (1947). Livestock and meat situation. U.S. Department of Agriculture, Agricultural Marketing Service.
Chicago-referens (17:e uppl.)Não informado. Livestock and Meat Situation. Washington: U.S. Department of Agriculture, Agricultural Marketing Service, 1947.
MLA-referens (8:e uppl.)Não informado. Livestock and Meat Situation. U.S. Department of Agriculture, Agricultural Marketing Service, 1947.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.