Style de citation APA (7e éd.)

United States. Department of Agriculture. (1948). Grass: The yearbook of agriculture 1948. U.S. Government Printing.

Style de citation Chicago (17e éd.)

United States. Department of Agriculture. Grass: The Yearbook of Agriculture 1948. Washington, D.C.: U.S. Government Printing, 1948.

Style de citation MLA (9e éd.)

United States. Department of Agriculture. Grass: The Yearbook of Agriculture 1948. U.S. Government Printing, 1948.