Wah, L. S., Salmon, E. M., Quevedo, F., & Ramos, C. (1986). A Project study on Philippine Airlines (M&E Dept.). College of Engineering.
Lua i Stíl Chicago (17ú heag.)Wah, Lee Shew, Edwin M. Salmon, Francispito Quevedo, agus Christopher Ramos. A Project Study on Philippine Airlines (M&E Dept.). Diliman, Quezon City: College of Engineering, 1986.
Lua MLA (9ú heag.)Wah, Lee Shew, et al. A Project Study on Philippine Airlines (M&E Dept.). College of Engineering, 1986.
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