O. Muhibburrohman, A. Fauzi, W. Hidayat, E. Syarifudin, and H. Hanafi, “SYSTEMATIC LITERATURE REVIEW: THE IMPACT OF FREE EDUCATION ON THE QUALITY OF EDUCATION IN EDUCATIONAL INSTITUTIONS”, im: J. M. P. I., vol. 7, no. 001, pp. 165–180, Nov. 2024.