Ong, E. D. (2002). RP's language advantage slowly slipping away, notes call center leader. Manila Bulletin.
Chicago Style (17th ed.) CitationOng, Edison Dy. "RP's Language Advantage Slowly Slipping Away, Notes Call Center Leader." Manila Bulletin 2002.
MLA引文Ong, Edison Dy. "RP's Language Advantage Slowly Slipping Away, Notes Call Center Leader." Manila Bulletin, 2002.
警告:這些引文格式不一定是100%准確.