Akbar, Syaeful, Wahyu Anhar, Nurul Huda, Lilik Damayanti, dan Basri Basri. 2021. “Optimalisasi Alat Praktek Air Conditioning (AC Trainer) Pada SMK Ibnu Khaldun Balikpapan”. Jurnal Abdi Masyarakat Indonesia 1 (2):463-68. https://doi.org/10.54082/jamsi.145.