Rizal, M., Fadhila, S. N. and Prihantini (2021) “Cluster Analysis Using Hierarchic Method for Classification of District / City of North Kalimantan Province Based on Human Development Indicators (HDI)”, Proceeding International Conference on Science and Engineering, 4, pp. 235–239. Available at: https://www.sunankalijaga.org/prosiding/index.php/icse/article/view/665 (Accessed: 31 July 2026).