Kusumadewi, Dian, Saptawati Bardosono, and Rini Sekartini. “Dietary Iron Intake, Serum Ferritin and Haemoglobin Levels, and Cognitive Development Scores of Infants Aged 6–8 Months”. Medical Journal of Indonesia 20, no. 1 (February 1, 2011): 46-9. Accessed April 27, 2024. http://mji.ui.ac.id/journal/index.php/mji/article/view/427.