Developing Physics History Teaching Material through Yakin Enggak Sulit (SERFIS YES) Based on Graphic Learning Media for the Students at Physics Department of Unismuh Makassar. JPF [Internet]. 2019 Jan. 29 [cited 2025 Aug. 26];7(1):89-101. Available from: https://journal.unismuh.ac.id/index.php/jpf/article/view/1739