SURYA PUTRA, P.; AGUS PURWANTO, N. The Leadership of School Principals in Improving the Quality of Vocational High Schools in Tanjung Selor District, Bulungan Regency. Eduvest - Journal of Universal Studies, [S. l.], v. 5, n. 7, p. 6443–6449., 2025. DOI: 10.59188/eduvest.v5i7.50389. Disponível em: https://eduvest.greenvest.co.id/index.php/edv/article/view/50389. Acesso em: 11 jul. 2025.