(1997). PNB at 81: Renewed strength, renewed commitment. Manila Bulletin.
Cita Chicago (17th ed.)"PNB at 81: Renewed Strength, Renewed Commitment." Manila Bulletin 1997.
Cita MLA (9th ed.)"PNB at 81: Renewed Strength, Renewed Commitment." Manila Bulletin, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.