Não informado. (1923). Miscellaneous Circular. U.S. Department of Agriculture.
Chicagoスタイル(17版)引用形式Não informado. Miscellaneous Circular. Washington: U.S. Department of Agriculture, 1923.
MLA(8版)引用形式Não informado. Miscellaneous Circular. U.S. Department of Agriculture, 1923.
警告: この引用は必ずしも正確ではありません.