H. . Rachmat, D. B. . Susetyo, D. . Indahwati, and D. . Rahmawati, “Applied of Multivariate Multilevel Modeling for Student Cognitive Achievement Analysis in AKSI 2019 Survey”, IJSBAR, vol. 55, no. 1, pp. 190–200, Jan. 2021, Accessed: Sep. 13, 2025. [Online]. Available: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/12158