SA’ADAH, U.; PUTRA, B. C. The Existence of Secondary School Education through the Role of the Principal: Case Study at SMA Negeri 13 Surabaya. Formosa Journal of Applied Sciences, [S. l.], v. 3, n. 7, p. 1923–1934, 2024. DOI: 10.55927/fjas.v3i7.10058. Disponível em: https://journal.formosapublisher.org/index.php/fjas/article/view/10058. Acesso em: 20 apr. 2026.