Zulyati, Z.; Sulastri, S.; Nurmalia, C. .; Yusrizal, Y.; Hasan, H. Application of Problem-Based Worksheet on Hydrocarbon Combustion Materials through E-Learning to Enhance Student’s Learning Outcomes and Enviromental Care Attitude . jppipa, pendidikan ipa, fisika, biologi, kimia 2022, 8, 2883-2887.