Ong, E. D. (2002). RP's language advantage slowly slipping away, notes call center leader. Manila Bulletin.
Chicago Style aipamenaOng, Edison Dy. "RP's Language Advantage Slowly Slipping Away, Notes Call Center Leader." Manila Bulletin 2002.
MLA aipamenaOng, Edison Dy. "RP's Language Advantage Slowly Slipping Away, Notes Call Center Leader." Manila Bulletin, 2002.
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