Purnomo W, Guilin X, Putri LR. The Effectiveness of Project-Based Learning in Improving Collaborative Skills of Elementary School Students. Int. J. of Educatio Elementaria and Psychologia [Internet]. 2024Nov.6 [cited 2025Sep.6];1(6):294-30. Available from: https://ypidathu.or.id/journal/index.php/ijeep/article/view/1383