(2007). Gawad Kalinga, Pfizer form health partnership program. Manila Bulletin.
Cita Chicago (17th ed.)"Gawad Kalinga, Pfizer Form Health Partnership Program." Manila Bulletin 2007.
Cita MLA (9th ed.)"Gawad Kalinga, Pfizer Form Health Partnership Program." Manila Bulletin, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.