Daffa Aryabima A. Educational stratification and social dynamics of regular and plus class programs at Muhammadiyah 2 Senior High School Medan. PSSJ [Internet]. 2025 Nov. 19 [cited 2025 Nov. 24];5(11):258-63. Available from: http://www.journal.privietlab.org/index.php/PSSJ/article/view/722