DWI NOVITA, R.; TIEN AMINATUN; RIHAB WIT DARYONO. E-Modules Through Flipped Classroom and PBL Models on Environmental Pollution Material to Increase Problem-Solving Ability. Journal of Education Technology, [S. l.], v. 6, n. 4, p. 744–754, 2022. DOI: 10.23887/jet.v6i4.51656. Disponível em: https://ejournal.undiksha.ac.id/index.php/JET/article/view/51656. Acesso em: 6 may. 2024.