Não informado. (1963). World agricultural production and trade. U.S. Department of Agriculture, Foreign Agricultural Service.
Chicago-Zitierstil (17. Ausg.)Não informado. World Agricultural Production and Trade. Washington: U.S. Department of Agriculture, Foreign Agricultural Service, 1963.
MLA-Zitierstil (8. Ausg.)Não informado. World Agricultural Production and Trade. U.S. Department of Agriculture, Foreign Agricultural Service, 1963.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.