APA引文

U.S.Department of Agriculture. (1948). Grass: The yearbook of agriculture 1946. Washington: U.S.Department of Agriculture.

Trích dẫn kiểu Chicago

U.S.Department of Agriculture. Grass: The Yearbook of Agriculture 1946. Washington: U.S.Department of Agriculture, 1948.

MLA引文

U.S.Department of Agriculture. Grass: The Yearbook of Agriculture 1946. Washington: U.S.Department of Agriculture, 1948.

警告：這些引文格式不一定是100％准確.