Isticharoh, A., Fauziah, Y. . and Churrohman, T. . (2020) “Principal Managerial System in Creating Quality Culture in SMP Muhammadiyah 3 Waru: Sistem Manajerial Kepala Sekolah dalam Menciptakan Budaya Mutu di SMP Muhammadiyah 3 Waru”, Proceedings of The ICECRS, 5. doi: 10.21070/icecrs2020406.