(2001). GSIS approves big pension hike. Philippine Daily Inquirer.
Chicago Style aipamena"GSIS Approves Big Pension Hike." Philippine Daily Inquirer 2001.
MLA aipamena"GSIS Approves Big Pension Hike." Philippine Daily Inquirer, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.