Lua APA (7ú heag.)

Sionil, F. C. (2002). GSIS quarter profits up from P15.31B to P21.75B. Manila Bulletin.

Lua i Stíl Chicago (17ú heag.)

Sionil, Fil C. "GSIS Quarter Profits Up from P15.31B to P21.75B." Manila Bulletin 2002.

Lua MLA (9ú heag.)

Sionil, Fil C. "GSIS Quarter Profits Up from P15.31B to P21.75B." Manila Bulletin, 2002.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.