Faisal, Muhammad, Fadhilah Fitri, and Zilrahmi. “Application of Principal Component Analysis in Identifying Factors Affecting the Human Development Index”. Mathematical Journal of Modelling and Forecasting 2, no. 2 (December 19, 2024): 30–36. Accessed January 21, 2025. https://mjomaf.ppj.unp.ac.id/index.php/mjmf/article/view/26.