Tjahjono, Susanto, Yulhendri. The Development of Collaborative Learning in The Frame work of Learning Developmnet HE 4.0. IJSTM [Internet]. 2020 Nov. 30 [cited 2026 Jul. 16];1(4):298-305. Available from: https://ijstmjournal.com/index.php/ijstm/article/view/95