Philippines (Republic). Civil Aeronautics Administration, Philippines (Republic). Department of Public Works, Transportation and Communications, & Philippines (Republic). National Economic and Development Authority. (1973). Zamboanga-Davao-Bacolod: Airport studies. s.n.].
Citazione stile Chigago Style (17a edizione)Philippines (Republic). Civil Aeronautics Administration, Transportation and Communications Philippines (Republic). Department of Public Works, e Philippines (Republic). National Economic and Development Authority. Zamboanga-Davao-Bacolod: Airport Studies. [Manila: s.n.], 1973.
Citatione MLA (9a ed.)Philippines (Republic). Civil Aeronautics Administration, et al. Zamboanga-Davao-Bacolod: Airport Studies. s.n.], 1973.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.