APA(7版)引用形式

Não informado. (1931). Dairy situation. U.S. Department of Agriculture, Economic Research Service.

Chicagoスタイル(17版)引用形式

Não informado. Dairy Situation. Washington: U.S. Department of Agriculture, Economic Research Service, 1931.

MLA(8版)引用形式

Não informado. Dairy Situation. U.S. Department of Agriculture, Economic Research Service, 1931.

警告: この引用は必ずしも正確ではありません.