Chao, Pei-Ching, Joseph Meng-chun Chin, and Gregory S. Ching. “A Hierarchical and Finite Mixture Modeling Approach to ‎Mathematics Achievement: Evidence from PISA 2022”. International Journal of Basic and Applied Sciences 14, no. 8 (December 23, 2025): 520–530. Accessed January 7, 2026. https://www.sciencepubco.com/index.php/IJBAS/article/view/37188.