Lismayuni, R. Purba, and S. Sinaga. “Improving Student Learning Outcomes Using the Cooperative Learning Model at SD Negeri 106870 Parlambean”. Jurnal Pendidikan Profesi Guru, vol. 2, no. 1, Feb. 2024, pp. 79-85, https://journal.ar-raniry.ac.id/ppg/article/view/6745.