United States. Department of Agriculture. (1948). Grass: The yearbook of agriculture 1948. U.S. Government Printing.
Chicagoスタイル(17版)引用形式United States. Department of Agriculture. Grass: The Yearbook of Agriculture 1948. Washington, D.C.: U.S. Government Printing, 1948.
MLA(9版)引用形式United States. Department of Agriculture. Grass: The Yearbook of Agriculture 1948. U.S. Government Printing, 1948.
警告: この引用は必ずしも正確ではありません.