A. D. Azzaki, S. Hariyadi, and L. Dewi Kusumayati, “EVALUATION OF THE NEED FOR BTT (BAGGAGE TOWING TRACTOR) FOR GROUND HANDLING OPERATIONS AT DJALALUDDIN GORONTALO AIRPORT”, Int. Conf. Adv. Transp. Eng. Appl. Soc. Sci., vol. 3, no. 1, Dec. 2024.