Kesuma, D. P., and A. A. Ritonga. “Effectiveness of Islamic Spiritual Extracurricular Activities in Shaping Vocational Students’ Character”. International Journal of Multidisciplinary Research of Higher Education (IJMURHICA), vol. 9, no. 4, Aug. 2026, pp. 1144-57, doi:10.24036/ijmurhica.v9i4.656.