Yunita, V., and T. Maigoda. “The The Roles of Micro Nutrition Substances (Folic Acid, Vitamin C, Zink) on the Incidence of Anemia in Addolescent Girls”. JPK : Jurnal Proteksi Kesehatan, Vol. 12, no. 2, Dec. 2023, pp. 169-76, https://jurnal.pkr.ac.id/index.php/JPK/article/view/719.