Maulana Kamal Arsyad, Achmad Sani Supriyanto, and Vivin Maharani Ekowati. “Reconstruction of the Islamic Human Development Index in Indonesia through Principal Component Analysis (PCA)”. Indonesian Journal of Islamic Economics Research 7, no. 2 (December 31, 2025). Accessed January 23, 2026. https://ejournal.uinsalatiga.ac.id/index.php/ijier/article/view/5443.