Implementation of Child Care Service Standards at UPT Social Services for Children and the Elderly Siborongborong North Tapanuli. IJETR [Internet]. 16 Juli 2024 [dikutip 22 September 2026];1(2):81-8. Tersedia pada: https://penerbitjurnalinternasional.com/index.php/IJETR/article/view/14