Oratmangun, Rendy. “Teacher’s Roles As: Classroom Manager And Classroom Instructor”. Cerdika: Jurnal Ilmiah Indonesia 1, no. 2 (February 25, 2021): 164–170. Accessed November 8, 2024. https://cerdika.publikasiindonesia.id/index.php/cerdika/article/view/24.