“Grouping The Districts in Sumatera Region Based on Economic Development Indicators Using K-Medoids and CLARA Methods” (2023) UNP Journal of Statistics and Data Science, 1(1), hlm. 16–22. Tersedia pada: https://ujsds.ppj.unp.ac.id/index.php/ujsds/article/view/13 (Diakses: 3 Oktober 2026).