United States. Department of Agriculture. (1948). Grass: The yearbook of agriculture 1948. U.S. Government Printing.
Chicago-Zitierstil (17. Ausg.)United States. Department of Agriculture. Grass: The Yearbook of Agriculture 1948. Washington, D.C.: U.S. Government Printing, 1948.
MLA-Zitierstil (9. Ausg.)United States. Department of Agriculture. Grass: The Yearbook of Agriculture 1948. U.S. Government Printing, 1948.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.