Mulatsih, Bekti. “Improving Learning Motivation and Chemistry Learning Outcomes of Class XI MIPA Students With the STAD Cooperative Learning Model”. Ideguru: Jurnal Karya Ilmiah Guru 4, no. 2 (November 1, 2019): 1-9. Accessed October 7, 2022. https://jurnal-dikpora.jogjaprov.go.id/index.php/jurnalideguru/article/view/88.