Zhafirah, T., Erna, M., & Rery, R. U. (2020). DEVELOPMENT OF E-MODULE BASED ON PROBLEM BASED LEARNING (PBL) IN HYDROCARBON MATERIAL. AL-ISHLAH: Jurnal Pendidikan, 12(2), 216–229. https://doi.org/10.35445/alishlah.v12i2.263