Rahayu, A. P., Y. Masduki, W. Waharjani, and S. Sutarman. “Construction of Humanistic Character Thru IPM Extracurricular Programs: A Case Study at Muhammadiyah Yogyakarta High School”. Journal of Indonesian Progressive Education, vol. 3, no. 1, Mar. 2026, pp. 113-20, doi:10.63617/jipe.v3i1.133.