Zalukhu, N. A.; Zendrato, C. E.; Hia, K.; Hulu, D. C. A.; Zamili, D. S.; Lase, N. K. Teacher Professionalism in Professional Perspective and Educational Management: An Exploratory Study at UPTD SMP Negeri 2 Gunungsitoli Idanoi. GB 2026, 4, 96-102.