Go, M. V. (1998). Palma-Gil named PNB president: 9 of 11 directors replaced; Angara takes over as new chairman. Philippine Star.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGo, Marianne V. "Palma-Gil Named PNB President: 9 of 11 Directors Replaced; Angara Takes over as New Chairman." Philippine Star 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGo, Marianne V. "Palma-Gil Named PNB President: 9 of 11 Directors Replaced; Angara Takes over as New Chairman." Philippine Star, 1998.
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