N. A. Zalukhu, C. E. Zendrato, K. Hia, D. C. A. Hulu, D. S. Zamili, and N. K. Lase, “Teacher Professionalism in Professional Perspective and Educational Management: An Exploratory Study at UPTD SMP Negeri 2 Gunungsitoli Idanoi”, GB, vol. 4, no. 2, pp. 96–102, Jun. 2026.