Fikriah, A. Z., Harahap, A., Siregar, M., Junita, J., & Ardansyah, M. (2026). The influence of principals’ visionary leadership and affective commitment on principal performance in senior high schools and vocational high schools in South Labuhanbatu Regency. Indonesian Journal Education, 5(2), 273–278. https://doi.org/10.56495/ije.v5i2.1660