Ivan Yusri Mahardika, Deni Sapta Nugraha, & Bambang Sutarwita. (2020). PENGARUH REFRESHER TRAINING TERHADAP KINERJA PEMANDU APPROACH CONTROL SURVEILLANCE DI MAKASSAR DIRECTOR. Langit Biru: Jurnal Ilmiah Aviasi, 13(01), 135-146. https://doi.org/10.54147/langitbiru.v13i01.121