Casayuran, M. B. (1999). Libraries on RP presidents sought. Manila Bulletin.
Cita Chicago (17th ed.)Casayuran, Mario B. "Libraries on RP Presidents Sought." Manila Bulletin 1999.
Cita MLA (9th ed.)Casayuran, Mario B. "Libraries on RP Presidents Sought." Manila Bulletin, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.