Haeruddin H, Khaldun S, Hadju V, Maidin A, Nurdin A. Effect of Iron Supplementation, Vitamin A and Vitamin C to the Increase of Hemoglobin and Achievement of Elementary School Students in Barru Regency, 2014. IJSBAR. 2015;24(3):384-395. Accessed January 29, 2026. https://www.gssrr.org/JournalOfBasicAndApplied/article/view/4760