Citazione Stile APA (7a Edizione)

De Leon, H. S. (1997). Textbook on the Philippine constitution. Rex Printing Co.

Citazione stile Chigago Style (17a edizione)

De Leon, Hector S. Textbook on the Philippine Constitution. Quezon City: Rex Printing Co, 1997.

Citatione MLA (9a ed.)

De Leon, Hector S. Textbook on the Philippine Constitution. Rex Printing Co, 1997.