Mamun, Md Abdullah Al, and Ruhina Binta A Ghani. “The Role of Iron and Zinc in Cognitive Development of Children”. Asian Journal of Medical and Biological Research 3, no. 2 (August 29, 2017): 145–151. Accessed April 24, 2024. https://www.banglajol.info/index.php/AJMBR/article/view/33561.