Muharti Sanjaya. “Factors Influencing the Utilization of Posyandu Services in the Work Area of Bah Biak Health Center, Pematangsiantar”. International Journal of Public Health Excellence (IJPHE) 2, no. 1 (December 30, 2022): 412–415. Accessed November 24, 2024. https://ejournal.ipinternasional.com/index.php/ijphe/article/view/321.