Sonhaji, Imam, Surya Tri Saputra, and Emilia Rahajeng Larasati. “Needs Analysis of Air Traffic Controller in the Development of Integrated Speaking and Listening Skills-Based on International Civil Aviation Organisation Requirement”. Airman: Jurnal Teknik dan Keselamatan Transportasi 6, no. 1 (June 30, 2023): 50–59. Accessed November 21, 2024. https://jurnal.poltekbangmakassar.ac.id/index.php/airman/article/view/346.