Simangunsong, Ika Trisni. “UPAYA MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH FISIKA DENGAN PROBLEM BASED INSTRUCTION DI SMK SWASTA YAPIM TARUNA”. JURNAL PENELITIAN BIDANG PENDIDIKAN 24, no. 2 (July 9, 2019): 68–73. Accessed February 18, 2026. https://jurnal.unimed.ac.id/2012/index.php/penelitian/article/view/13936.