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Lua i Stíl Chicago (17ú heag.)"GSIS: Pacesetter at 64." Manila Bulletin 2001.
Lua MLA (9ú heag.)"GSIS: Pacesetter at 64." Manila Bulletin, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.