Hasan M, Komara E, Rostini D, Asrofi I. Principal management in improving student discipline to support science learning effectiveness at SMPN 1 Jatinangor and SMPN 12 Bandung City. IJoTis [Internet]. 30 Maret 2026 [dikutip 16 September 2026];6(1):1-12. Tersedia pada: https://ejournal-dppm.upi.edu/ijotis/article/view/989