Shofian Syarifuddin. “Basic Immunization Program Coverage of Minimum Service Standards (MSS) in Raja Aligas, Huta Bayu Raja District”. International Journal of Public Health Excellence (IJPHE) 2, no. 2 (April 3, 2023): 488–491. Accessed May 10, 2024. https://ejournal.ipinternasional.com/index.php/ijphe/article/view/360.