Cita APA (7th ed.)

Philippine Postal Corporation. The New ZIP code of the Philippines. Philippine Postal Corporation.

Cita Chicago (17th ed.)

Philippine Postal Corporation. The New ZIP Code of the Philippines. [Manila]: Philippine Postal Corporation.

Cita MLA (9th ed.)

Philippine Postal Corporation. The New ZIP Code of the Philippines. Philippine Postal Corporation.

Atenció: Aquestes cites poden no estar 100% correctes.