Yamsuan, B. R. S. (2003). Why does GSIS collect more moey from membeers when it has billions to spare? Philippine Star.
Lua i Stíl Chicago (17ú heag.)Yamsuan, Brian Raymund S. "Why Does GSIS Collect More Moey from Membeers When It Has Billions to Spare?" Philippine Star 2003.
Lua MLA (9ú heag.)Yamsuan, Brian Raymund S. "Why Does GSIS Collect More Moey from Membeers When It Has Billions to Spare?" Philippine Star, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.