APA (7th ed.) Citation

Santiago, R. (2009). President Diosdado P. Macapagal. Manila Bulletin.

Chicago Style (17th ed.) Citation

Santiago, Roni. "President Diosdado P. Macapagal." Manila Bulletin 2009.

MLA (9th ed.) Citation

Santiago, Roni. "President Diosdado P. Macapagal." Manila Bulletin, 2009.

Warning: These citations may not always be 100% accurate.