Permana, Sendi, Darwin Parlaungan Lubis, Novida Yenny, M. Taufik Permadi, Della Amelia Milanda, Irson Nababan, Tria Maulia, and Jennifer Halim. 2024. “An Analysis of Public Schools Availability and Affordability in Small Islands (Case Study: Sabang Municipality)”. Geosfera Indonesia 9 (3):343-60. https://doi.org/10.19184/geosi.v9i3.46884.