Marfil, M. (1999). Erap hardens position: I will not be intimidated. Philippine Daily Inquirer.
Lua i Stíl Chicago (17ú heag.)Marfil, Martin. "Erap Hardens Position: I Will Not Be Intimidated." Philippine Daily Inquirer 1999.
Lua MLA (9ú heag.)Marfil, Martin. "Erap Hardens Position: I Will Not Be Intimidated." Philippine Daily Inquirer, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.