APA (7th ed.) Citation

De Leon, H. S. (1999). Philippine constitutional law: Principles and cases. Rex Book Store.

Chicago Style (17th ed.) Citation

De Leon, Hector S. Philippine Constitutional Law: Principles and Cases. Manila: Rex Book Store, 1999.

MLA (9th ed.) Citation

De Leon, Hector S. Philippine Constitutional Law: Principles and Cases. Rex Book Store, 1999.

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