APA (7th ed.) Citation

Philippines. Bureau of Posts. Planning Division. (1977). Post office classification study. The Bureau.

Chicago Style (17th ed.) Citation

Philippines. Bureau of Posts. Planning Division. Post Office Classification Study. [Manila]: The Bureau, 1977.

MLA (9th ed.) Citation

Philippines. Bureau of Posts. Planning Division. Post Office Classification Study. The Bureau, 1977.

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