Sionil, F. C. (1999). GSIS justifies buy of PCI Bank block. Manila Bulletin.
Lua i Stíl Chicago (17ú heag.)Sionil, Fil C. "GSIS Justifies Buy of PCI Bank Block." Manila Bulletin 1999.
Lua MLA (9ú heag.)Sionil, Fil C. "GSIS Justifies Buy of PCI Bank Block." Manila Bulletin, 1999.
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