Ryan, V. C. (1974). Frutas cítricas para vitamina C. Texas Agricultural Extension Service.
Chicago Style (17th ed.) CitationRyan, Virginia Cass. Frutas Cítricas Para Vitamina C. College Station, Texas: Texas Agricultural Extension Service, 1974.
MLA (9th ed.) CitationRyan, Virginia Cass. Frutas Cítricas Para Vitamina C. Texas Agricultural Extension Service, 1974.
Warning: These citations may not always be 100% accurate.