(2003). GSIS retirement benefits up 69%. Manila Times.
Lua i Stíl Chicago (17ú heag.)"GSIS Retirement Benefits Up 69%." Manila Times 2003.
Lua MLA (9ú heag.)"GSIS Retirement Benefits Up 69%." Manila Times, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.