Nafiudin, M., & Rindaningsih, I. (2026). Marketing Management Development Strategy of SMP Muhammadiayah 3 Kutorejo Based on The Delta Model: Strategi Pengembangan Manajemen Pemasaran SMP Muhammadiayah 3 Kutorejo Berbasis The Delta Model. Indonesian Journal of Innovation Studies, 27(2), 10.21070/ijins.v27i2.1938. https://doi.org/10.21070/ijins.v27i2.1938