Purnama, Susan. “Analisis Deskriptif Kualitas Pelayanan Bimbingan Belajar Ganesha Operation Tahun Ajar 2020”. Economics Professional in Action (E-Profit) 2, no. 01 (August 2, 2022): 54–58. Accessed May 13, 2026. https://jurnalunibi.unibi.ac.id/ojs/index.php/eprofit/article/view/507.