APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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