APA (7th ed.) Citation

De Ocampo, E. A. (1993). Why is Rizal the greatest Filipino hero? National Historical Institute.

Chicago Style (17th ed.) Citation

De Ocampo, Esteban Arotomas. Why Is Rizal the Greatest Filipino Hero? Manila: National Historical Institute, 1993.

MLA (9th ed.) Citation

De Ocampo, Esteban Arotomas. Why Is Rizal the Greatest Filipino Hero? National Historical Institute, 1993.