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