Agency for International Development y The Nutrition Foundation. (1988). Guidelines For The Eradication Of Vitamin A Deficiency And Xerophthalmia (Tercera edición.). Agency for International Development.
Citazione stile Chigago Style (17a edizione)Agency for International Development y The Nutrition Foundation. Guidelines For The Eradication Of Vitamin A Deficiency And Xerophthalmia. Tercera edición. Washington: Agency for International Development, 1988.
Citatione MLA (8a ed.)Agency for International Development y The Nutrition Foundation. Guidelines For The Eradication Of Vitamin A Deficiency And Xerophthalmia. Tercera edición. Agency for International Development, 1988.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.