Fattikasari DW, Nasrudin H. Development of electronic worksheets based on project-based learning assisted by a virtual laboratory to train students’ critical thinking skills. J. Pijar.MIPA [Internet]. 2023 Jul. 30 [cited 2024 Nov. 22];18(4):493-501. Available from: http://jurnalfkip.unram.ac.id/index.php/JPM/article/view/5162