“Maternal Knowledge of Umbilical Cord Care and Its Association With Cord Separation Duration: A Cross-Sectional Study in Simalungun Regency”. Jurnal Kebidanan Manna 5, no. 1 (June 30, 2026): 143–156. Accessed September 19, 2026. https://journal.bengkuluinstitute.com/index.php/JKM/article/view/1963.