Zuhriyah, Aminah, I Made Astra ., and Yufiarti . “Collaborative Learning Model With Problem Solving Approach To Improving Student Environment Sensitivity”. KnE Social Sciences 4, no. 14 (November 11, 2020): 65–73. Accessed December 30, 2024. https://knepublishing.com/index.php/KnE-Social/article/view/7859.