APA (7th ed.) Citation

Philippine Ports Authority & Castro, T. C. (1989). Profile of Philippine ports, 1989-. Philippine Ports Authority.

Chicago Style (17th ed.) Citation

Philippine Ports Authority and Teresita C. Castro. Profile of Philippine Ports, 1989-. [Manila]: Philippine Ports Authority, 1989.

MLA (9th ed.) Citation

Philippine Ports Authority and Teresita C. Castro. Profile of Philippine Ports, 1989-. Philippine Ports Authority, 1989.

Warning: These citations may not always be 100% accurate.