Não informado. (1981). Fruit outlook and situation. U.S. Department of Agriculture, Economic Research Service.
Citação do estilo Chicago (17ª ed.)Não informado. Fruit Outlook and Situation. Washington: U.S. Department of Agriculture, Economic Research Service, 1981.
Citação MLA (8ª ed.)Não informado. Fruit Outlook and Situation. U.S. Department of Agriculture, Economic Research Service, 1981.
警告：這些引文格式不一定是100％准確.