Philippines (Republic). Industrial Development Center & Survey and Research Department. (1956). Selected statistics and information on air transportation in the Philippines. [s.n.].
Cita Chicago (17th ed.)Philippines (Republic). Industrial Development Center i Survey and Research Department. Selected Statistics and Information on Air Transportation in the Philippines. Manila: [s.n.], 1956.
Cita MLA (9th ed.)Philippines (Republic). Industrial Development Center i Survey and Research Department. Selected Statistics and Information on Air Transportation in the Philippines. [s.n.], 1956.
Atenció: Aquestes cites poden no estar 100% correctes.