Não informado. (1924). Crops and markets. U.S. Department of Agriculture, Agricultural Marketing Service.
Chicago-Zitierstil (17. Ausg.)Não informado. Crops and Markets. Washington: U.S. Department of Agriculture, Agricultural Marketing Service, 1924.
MLA-Zitierstil (8. Ausg.)Não informado. Crops and Markets. U.S. Department of Agriculture, Agricultural Marketing Service, 1924.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.