Gonzales, I. C. (2010). BIR to lose P6B due to optional deduction. Philippine Star.
Chicago Style aipamenaGonzales, Iris Cecilia. "BIR to Lose P6B Due to Optional Deduction." Philippine Star 2010.
MLA aipamenaGonzales, Iris Cecilia. "BIR to Lose P6B Due to Optional Deduction." Philippine Star, 2010.
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