Saleh, S., Haerunisah, Niswaty, R., & Nasaruddin. (2020). Effectiveness of Classroom Management at Sekolah Menengah Kejuruan (SMK) in Sulawesi Selatan, Indonesia. GNOSI: An Interdisciplinary Journal of Human Theory and Praxis, 3(2), 57-64. Retrieved from http://www.gnosijournal.com/index.php/gnosi/article/view/53