APA (7. basım) Alıntı

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

Chicago Style (17. basım) Atıf

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

MLA (9th ed.) Atıf

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

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