Fachrurrazi, F. . Khoiruroziq, and S. Nilakresna. “Design of ADGS Prototype Using Arduino-Based Distance Sensor at Gorontalo Djalaluddin Airport”. Airman: Jurnal Teknik Dan Keselamatan Transportasi, vol. 4, no. 2, Dec. 2021, pp. 51-55, doi:10.46509/ajtk.v4i2.193.