Nasution, Sasqia Salsa Zahra, and Ira Suryani. “THE EFFECTIVENESS OF GROUP COUNSELING WITH SELF-REFLECTION TECHNIQUES TO REDUCE SELFISH ATTITUDES IN STUDENTS AT BOARDING SCHOOL SMP PLUS JABAL RAHMAH MULIA MEDAN”. SOSIOEDUKASI : JURNAL ILMIAH ILMU PENDIDIKAN DAN SOSIAL, vol. 14, no. 4, Nov. 2025, pp. 2637-44, doi:10.36526/sosioedukasi.v14i4.6493.