Cita APA (7th ed.)

De Leon, H. S. (1973). Textbook on the new Philippine constitution. Rex Book Store.

Cita Chicago (17th ed.)

De Leon, Hector S. Textbook on the New Philippine Constitution. Manila: Rex Book Store, 1973.

Cita MLA (9th ed.)

De Leon, Hector S. Textbook on the New Philippine Constitution. Rex Book Store, 1973.