APA (7th ed.) Citation

Cruz, I. A. (1991). Philippine political law (1991 ed.). Central Lawbook.

Chicago Style (17th ed.) Citation

Cruz, Isagani A. Philippine Political Law. 1991 ed. Quezon City: Central Lawbook, 1991.

MLA (9th ed.) Citation

Cruz, Isagani A. Philippine Political Law. 1991 ed. Central Lawbook, 1991.