A. I. Wibowo, Sularni, M. S. Hartati, and A. Fitriani, “Increasing Intrinsic Motivation of Students through the Implementation of Positive Culture at SMPN 15 Bengkulu Utara ”, Galuh. Int. J. Com. Serv. Develop, vol. 3, no. 1, pp. 15–19, May 2026.