(1997). GSIS ups bonus of pensioners. Manila Bulletin.
Lua i Stíl Chicago (17ú heag.)"GSIS Ups Bonus of Pensioners." Manila Bulletin 1997.
Lua MLA (9ú heag.)"GSIS Ups Bonus of Pensioners." Manila Bulletin, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.