(2001). GSIS income increased by 42% on 1st quarter. Manila Bulletin.
Lua i Stíl Chicago (17ú heag.)"GSIS Income Increased by 42% on 1st Quarter." Manila Bulletin 2001.
Lua MLA (9ú heag.)"GSIS Income Increased by 42% on 1st Quarter." Manila Bulletin, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.