Não informado. (2001). Annual report of the United States Department of Agriculture. U.S. Department of Agriculture.
Chicago-Zitierstil (17. Ausg.)Não informado. Annual Report of the United States Department of Agriculture. Washington: U.S. Department of Agriculture, 2001.
MLA-Zitierstil (8. Ausg.)Não informado. Annual Report of the United States Department of Agriculture. U.S. Department of Agriculture, 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.