Nathan Associates, Inc. (1990). Philippine transport sector review. Nathan Associates.
Cita Chicago Style (17a ed.)Nathan Associates, Inc. Philippine Transport Sector Review. Washington, D.C: Nathan Associates, 1990.
Cita MLA (9a ed.)Nathan Associates, Inc. Philippine Transport Sector Review. Nathan Associates, 1990.
Precaución: Estas citas no son 100% exactas.