Siregar, Eka, Arni Amir, and Nuzulia Irawati. “Ideal Dietary Intakes of Vitamin B12 and Vitamin E Prevent Anemia During Pregnancy”. Jurnal Ilmu dan Teknologi Kesehatan 11, no. 2 (March 30, 2024): 231-243. Accessed December 22, 2024. https://poltekkesjakarta3.ac.id/ejurnalnew/index.php/jitek/article/view/1195.