Negara, Baiq Ramdhani Amelia. “Systematic Review: The Effect of Fe Supplementation on Increasing Haemoglobin Levels in Female Adolescent”. Jurnal Biologi Tropis 23, no. 1 (December 20, 2023): 550–556. Accessed May 20, 2024. https://jurnalfkip.unram.ac.id/index.php/JBT/article/view/6058.