Purwanto, A. ., M. E. . Wulanningtyas, and N. . Khuzaini. “Analisis Model Regresi Multilevel Dalam Kajian Hasil Belajar Siswa”. Formosa Journal of Multidisciplinary Research, vol. 1, no. 6, Oct. 2022, pp. 1341-50, doi:10.55927/fjmr.v1i6.1568.