Nainggolan, Tinawati, and Rumiris Simatupang. “Spinning Based Source Of Iron Biscuit As Additional Food For Pregnant Women In Pulo Pakkat Village, Pulo Pakkat Puskesmas Working Area, 2021”. Science Midwifery 10, no. 3 (August 30, 2022): 2424–2431. Accessed April 22, 2026. https://www.midwifery.iocspublisher.org/index.php/midwifery/article/view/461.