Wahyuningsih, Sungkawati Kardi. “GROUP WORK TO IMPROVE CLASSROOM INTERACTION AND STUDENTS’ SELF-ESTEEM OF STAIN GPA”. Research and Innovation in Language Learning 1, no. 3 (September 26, 2018): 187–200. Accessed October 8, 2025. https://jurnal.ugj.ac.id/index.php/RILL/article/view/1125.