Andrianik, Dian. “ENHANCING LEARNING OUTCOMES THROUGH COOPERATIVE LEARNING MODEL GROUP INVESTIGATION ON 5th GRADE STUDENTS”. Jurnal Pendidikan dan Pengajaran 41, no. 4 (October 1, 2008): 69–73. Accessed June 30, 2024. https://ejournal.undiksha.ac.id/index.php/JPP/article/view/11653.