Suyitno, Suyitno, Iis Widianto, and Suryaneta binti Masrul. 2018. “Development of Learning Media for the Course of Two-Stroke Gasoline Motors to Improve Students’ Learning Outcomes”. Jurnal Pendidikan Teknologi Dan Kejuruan 24 (1):83-90. https://doi.org/10.21831/jptk.v24i1.18008.