Avendaño, C. O. (2003). Drilon: History shows President plays no role in Charter change. Philippine Daily Inquirer.
Lua i Stíl Chicago (17ú heag.)Avendaño, Christine O. "Drilon: History Shows President Plays No Role in Charter Change." Philippine Daily Inquirer 2003.
Lua MLA (9ú heag.)Avendaño, Christine O. "Drilon: History Shows President Plays No Role in Charter Change." Philippine Daily Inquirer, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.