Villa, R. L. (2002). Guingona returns as President of ruling Lakas party. Manila Bulletin.
Chicago Style aipamenaVilla, Rod L. "Guingona Returns as President of Ruling Lakas Party." Manila Bulletin 2002.
MLA aipamenaVilla, Rod L. "Guingona Returns as President of Ruling Lakas Party." Manila Bulletin, 2002.
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