DINDA RENITA SIBAGARIANG; HUSNI THAMRIN. Efektivitas Program Keterampilan Vokasional Bagi Penyandang Tunagrahita di Sekolah Luar Biasa Negeri Binjai . Concept: Journal of Social Humanities and Education, [S. l.], v. 4, n. 3, p. 120–128, 2025. DOI: 10.55606/concept.v4i3.2183. Disponível em: https://journal-stiayappimakassar.ac.id/index.php/Concept/article/view/2183. Acesso em: 20 oct. 2025.