Perez, D. (1999). 12 firms probed on tax credit fraud. Manila Bulletin.
Chicago Style aipamenaPerez, Delfin. "12 Firms Probed on Tax Credit Fraud." Manila Bulletin 1999.
MLA aipamenaPerez, Delfin. "12 Firms Probed on Tax Credit Fraud." Manila Bulletin, 1999.
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