Hasanah U, Jalinus N, Maksum H. The Validity Development of Adobe Flash Based Learning Media at Energy Conversion Machine Course in Vocational Education Programs. JERE [Internet]. 4 Desember 2019 [dikutip 5 April 2025];3(4):248-57. Tersedia pada: https://ejournal.undiksha.ac.id./index.php/JERE/article/view/22909