K. A. Nababan, N. P. Salsabila, P. A. O. Khan, H. M. A. Pasaribu, and L. S. Saragih, “Group Dynamics and Teamwork Effectiveness in the Intra-School Student Organization: A Case Study at SMK Negeri 7 Medan”, IJSOC, vol. 8, no. 4, pp. 379-392, Oct. 2026.