1.
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 [Internet]. 2025Jul.8 [cited 2026Oct.7];5(7):6443-6449. Available from: http://www.eduvest.greenvest.co.id.submitjurnal.id/index.php/edv/article/view/50389