Ahmad F, Murtihapsari M, Rombe YP. Developing Problem-Based Learning Modules on Petroleum Materials in Chemistry Learning. j.tadris.kimiya [Internet]. 2023 Jun. 29 [cited 2025 Dec. 6];8(1):104-1. Available from: https://journal.uinsgd.ac.id/index.php/tadris-kimiya/article/view/23952