Developing A Module on Sound Wave of Solid, Liquid, and Gas Substances through Problem Solving Model with Matlab Simulation on Wave and Optical Courses. JPF [Internet]. 10 Mei 2019 [dikutip 31 Juli 2026];7(2):173-82. Tersedia pada: https://journal.unismuh.ac.id/index.php/jpf/article/view/1996