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.
Chicago-Zitierstil (17. Ausg.)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.
MLA-Zitierstil (8. Ausg.)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.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.