Isticharoh, A., Fauziah, Y. ., & 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. https://doi.org/10.21070/icecrs2020406