Doni, D.R. and Munandar, D.R. 2024. Analisis Self-efficacy Siswa SMK pada Materi Sistem Persamaan Linear Tiga Variabel. Didactical Mathematics. 6, 1 (Apr. 2024), 61–67. DOI:https://doi.org/10.31949/dm.v6i1.8019.