APA (7th ed.) Citation

Philippines (Republic). Bureau of Telecommunications. Telephone directory: Government telephone system. s.n.

Chicago Style (17th ed.) Citation

Philippines (Republic). Bureau of Telecommunications. Telephone Directory: Government Telephone System. [Manila: s.n.

MLA (9th ed.) Citation

Philippines (Republic). Bureau of Telecommunications. Telephone Directory: Government Telephone System. s.n.

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