(1997). PNB: Reinventing itself for global competition. Manila Bulletin.
Chicago Style aipamena"PNB: Reinventing Itself for Global Competition." Manila Bulletin 1997.
MLA aipamena"PNB: Reinventing Itself for Global Competition." Manila Bulletin, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.