Suwito S, Hamdani AF. DEVELOPING STUDENTS LEARNING ATTRIBUTES THROUGH COLLABORATIVE LEARNING BASED ON FLIPPED CLASSROOM. Geosfera Indones. [Internet]. 2019 Apr. 29 [cited 2026 Feb. 21];4(1):1-10. Available from: https://geosfera.unej.ac.id/index.php/GEOSI/article/view/8938