Marfil, M. (2001). SSS plan to hike premiums opposed. Philippine Daily Inquirer.
Lua i Stíl Chicago (17ú heag.)Marfil, Martin. "SSS Plan to Hike Premiums Opposed." Philippine Daily Inquirer 2001.
Lua MLA (9ú heag.)Marfil, Martin. "SSS Plan to Hike Premiums Opposed." Philippine Daily Inquirer, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.