Ong, E. D. (2003). China developing English - speaking talents fast, Philippine call center operators should watch out. Manila Bulletin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOng, Edison Dy. "China Developing English - Speaking Talents Fast, Philippine Call Center Operators Should Watch Out." Manila Bulletin 2003.
एमएलए (9वां संस्करण) प्रशस्ति पत्रOng, Edison Dy. "China Developing English - Speaking Talents Fast, Philippine Call Center Operators Should Watch Out." Manila Bulletin, 2003.
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