NOVI RIRIYANTI; SITANGGANG, Nathanael; DARYANTO, Eka. Principal Transformational Leadership, School Culture, and Productivity of Medan Johor High School. PROSIDING SEMINAR NASIONAL KEGURUAN DAN PENDIDIKAN (SNKP), [S. l.], v. 2, p. 102–111, 2024. Disponível em: https://www.ejournal.ummuba.ac.id/index.php/SNKP/article/view/2149. Acesso em: 10 aug. 2025.