Não informado. (1981). Fruit outlook and situation. U.S. Department of Agriculture, Economic Research Service.
Chicago-referens (17:e uppl.)Não informado. Fruit Outlook and Situation. Washington: U.S. Department of Agriculture, Economic Research Service, 1981.
MLA-referens (8:e uppl.)Não informado. Fruit Outlook and Situation. U.S. Department of Agriculture, Economic Research Service, 1981.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.