SITORUS, Jonni. PEMENUHAN GURU PRODUKTIF SMK DI ERA REVOLUSI INDUSTRI 4.0. Inovasi, [S. l.], v. 18, n. 1, p. 9–19, 2021. DOI: 10.33626/inovasi.v18i1.335. Disponível em: http://jurnal.bappelitbang.sumutprov.go.id/index.php/inovasi/article/view/335. Acesso em: 15 jun. 2025.