“The Effectiveness of Group Counseling With Self-Control Techniques to Improve Student Learning Discipline on Grade X MM3 Students of SMK Muhammadiyah Salaman”. Zona Education Indonesia 1, no. 3 (October 20, 2023): 157–162. Accessed September 11, 2026. https://zona-education.org/index.php/zei/article/view/26.