Cita APA (7th ed.)

Castro, P. A. (1983). Philippine bilateral air agreements. Foreign Service Institute.

Cita Chicago (17th ed.)

Castro, Pacifico A. Philippine Bilateral Air Agreements. Manila: Foreign Service Institute, 1983.

Cita MLA (9th ed.)

Castro, Pacifico A. Philippine Bilateral Air Agreements. Foreign Service Institute, 1983.