Ghufron , Syamsul, Nafiah, Syahruddin, Kaswadi, and Mustofa. 2023. “The Effect of STAD-Type Cooperative Learning Based on a Learning Tool on Critical Thinking Ability in Writing Materials”. International Journal of Instruction 16 (1):61-84. https://e-iji.net/ats/index.php/pub/article/view/173.