Suyitno, Suyitno, Iis Widianto, and Suryaneta binti Masrul. “Development of Learning Media for the Course of Two-Stroke Gasoline Motors to Improve Students’ Learning Outcomes”. Jurnal Pendidikan Teknologi dan Kejuruan 24, no. 1 (April 17, 2018): 83–90. Accessed May 12, 2025. https://journal.uny.ac.id/index.php/jptk/article/view/18008.