APA (7th ed.) Citation

(1996). The Philippines and its 16 political regions: Maps and facts. Bookman.

Chicago Style (17th ed.) Citation

The Philippines and Its 16 Political Regions: Maps and Facts. Quezon City: Bookman, 1996.

MLA (9th ed.) Citation

The Philippines and Its 16 Political Regions: Maps and Facts. Bookman, 1996.

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