Harliantar, Muh. Syaiful Saehu, Sri Indarti, Syaifuddin, Phong Thanh Nguyen, and Muhammad Talhah Ajmain. 2020. “Quality Service Competition in Education”. International Journal of Psychosocial Rehabilitation 24 (8): 1513-17. https://doi.org/10.61841/x062dc55.