Nursa’ban, E., M. Masykuri, and S. Yamtinah. “Improving Student Learning Outcomes in Science Subjects through the Implementation of PBL-Based Module”. JPBI (Jurnal Pendidikan Biologi Indonesia), vol. 5, no. 2, June 2019, pp. 269-76, doi:10.22219/jpbi.v5i2.7534.