Nugrah, Andi Fadhilah, Sheilla Novita, Sugiyanto, Muhammad Nur, and Dian Firdiani. “ Innovation in Refrigeration and Air Conditioning Engineering Teaching Materials at Makassar Aviation Polytechnic”. Airman: Jurnal Teknik dan Keselamatan Transportasi 7, no. 2 (December 27, 2024): 64–72. Accessed June 15, 2025. https://jurnal.poltekbangmakassar.ac.id/index.php/airman/article/view/453.