Villarroel, F. (1964). Apolinario Mabini: His birth date and student years. National Historical Institute.
Chicago-Zitierstil (17. Ausg.)Villarroel, Fidel. Apolinario Mabini: His Birth Date and Student Years. Manila: National Historical Institute, 1964.
MLA-Zitierstil (9. Ausg.)Villarroel, Fidel. Apolinario Mabini: His Birth Date and Student Years. National Historical Institute, 1964.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.