LUBIS, Khairuddin; LUBIS, Suwardi; RUJIMAN. The Influence of Teacher Professionalism Development of Youth Capacity Improvement in Deli Serdang. Journal of Environmental and Development Studies, [S. l.], v. 1, n. 01, p. 01–08, 2020. DOI: 10.32734/jeds.v1i1.4605. Disponível em: https://talenta.usu.ac.id/jeds/article/view/4605. Acesso em: 21 may. 2026.