Não informado. (1943). Bibliographical bulletin. U.S. Department of Agriculture.
Chicagoスタイル(17版)引用形式Não informado. Bibliographical Bulletin. Washington: U.S. Department of Agriculture, 1943.
MLA(8版)引用形式Não informado. Bibliographical Bulletin. U.S. Department of Agriculture, 1943.
警告: この引用は必ずしも正確ではありません.