Umam, M. Afifuddin Khotibul, et al. “Development of Problem-Based Learning (PBL) Based Mathematics Comic Media Using Pixton to Improve students’ Mathematical Problem-Solving Skills in Class VIII Junior High School”. Journal Focus Action of Research Mathematic (Factor M), vol. 7, no. 1, May 2024, pp. 92-109, doi:10.30762/f_m.v7i1.2623.