Não informado. Livestock Meat Wool. U.S. Department of Agriculture, Livestock, Poutry, Grain and Seed Division.
Citação do estilo Chicago (17ª ed.)Não informado. Livestock Meat Wool. Washington: U.S. Department of Agriculture, Livestock, Poutry, Grain and Seed Division.
Citação MLA (8ª ed.)Não informado. Livestock Meat Wool. U.S. Department of Agriculture, Livestock, Poutry, Grain and Seed Division.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.