Não informado. Production Research Report. U.S. Department of Agriculture.
Citação do estilo Chicago (17ª ed.)Não informado. Production Research Report. Washington: U.S. Department of Agriculture.
Citação MLA (8ª ed.)Não informado. Production Research Report. U.S. Department of Agriculture.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.