Sabur, F. 2018. Effect of Runway Position 13/31 and 03/21 Against Ground Control Unit Services in the International Airport of Sultan Hasanuddin Makassar. Airman: Jurnal Teknik dan Keselamatan Transportasi. 1, 2 (Dec. 2018), 67–76. DOI:https://doi.org/10.46509/ajtk.v1i2.53.