Philippines (Republic). Civil Aeronautics Administration & United States. Agency for International Development. (1967). Philippine airports and airways: Requirements analysis. [s.n.].
Citazione stile Chigago Style (17a edizione)Philippines (Republic). Civil Aeronautics Administration e United States. Agency for International Development. Philippine Airports and Airways: Requirements Analysis. Manila: [s.n.], 1967.
Citatione MLA (9a ed.)Philippines (Republic). Civil Aeronautics Administration e United States. Agency for International Development. Philippine Airports and Airways: Requirements Analysis. [s.n.], 1967.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.