Siytangco, D. M. (1988). Cory marks 55th birthday. Manila Bulletin.
Cita Chicago (17th ed.)Siytangco, Deedee M. "Cory Marks 55th Birthday." Manila Bulletin 1988.
Cita MLA (9th ed.)Siytangco, Deedee M. "Cory Marks 55th Birthday." Manila Bulletin, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.