Tanoto, Nicholas, Ivone Viane Rimbing, and Stefani Amelya. “Relationship Between Maternal Child Handbook Possession and Knowledge Level of Pregnant Mothers Towards Its Contents”. Andalas Obstetrics And Gynecology Journal 9, no. 2 (July 25, 2025): 178–189. Accessed April 2, 2026. https://jurnalobgin.fk.unand.ac.id/index.php/JOE/article/view/443.