Mag-iba, A., Maravillas, M. C., Navarro, M. A., Paragas, E., & Ventura, R. (1990). Gulf Air: A systems study. College of Engineering.
Chicago (17e ed.) BronvermeldingMag-iba, Arlene, Ma. Carmela Maravillas, Marilyn Anne Navarro, Edgar Paragas, en Reymundo Ventura. Gulf Air: A Systems Study. Diliman, Quezon City: College of Engineering, 1990.
MLA (9e ed.) BronvermeldingMag-iba, Arlene, et al. Gulf Air: A Systems Study. College of Engineering, 1990.
Let op: Deze citaties zijn niet altijd 100% accuraat.