Sahyar, Sahyar, and Wawan Bunawan. “DEVELOPING TEACHING MATERIAL FOCUS ON WAVE SUBJECT USING PISA (PROGRAMME FOR INTERNATIONAL STUDENT ASSESSMENT) ON UNDERGRADUATE DEGREE PROGRAMS IN PHYSICS”. Jurnal Pendidikan Fisika 8, no. 2 (December 27, 2019): 114–119. Accessed July 3, 2025. https://jurnal.unimed.ac.id/2012/index.php/jpf/article/view/15087.