Mag-iba, A., Maravillas, M. C., Navarro, M. A., Paragas, E., & Ventura, R. (1990). Gulf Air: A systems study. College of Engineering.
Citazione stile Chigago Style (17a edizione)Mag-iba, Arlene, Ma. Carmela Maravillas, Marilyn Anne Navarro, Edgar Paragas, e Reymundo Ventura. Gulf Air: A Systems Study. Diliman, Quezon City: College of Engineering, 1990.
Citatione MLA (9a ed.)Mag-iba, Arlene, et al. Gulf Air: A Systems Study. College of Engineering, 1990.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.