Mendrofa, E. S. J.; Trisman Harefa; Riswan Zega; Kristof Marthin Telaumbanua. Analysis Of The Role Of The Deputy Principal For Student Affairs In Development And Improvement Intra-School Student Organization Work Ethos At SMAS St. Xaverius Gunungsitoli. Visi Sosial Humaniora 2024, 5, 217-224.