M. A. Hernawan, S. D. Putri, and S. Suprihadi, “KETERSEDIAAN GROUND SUPPORT EQUIPMENT DAN KINERJA OPERATOR RAMP SERVICES DI BANDAR UDARA SOEKARNO HATTA”, j. manaj. buss. transp. logist., vol. 4, no. 2, pp. 237–248, Jan. 2018.