Marettania, N., Zilrahmi, and M. . Ayuningtyas. “Comparison of District/City Clusters in West Sumatra Province 2019–2025 Based on Labor Indicators Using K-Means Method”. UNP Journal of Statistics and Data Science, vol. 4, no. 2, May 2026, pp. 275-82, doi:10.24036/ujsds/vol4-iss2/495.