Alarilla, J. G. (1999). PLDT opens call management cneter to monitor center to monitor voice traffic. Philippine Daily Inquirer.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAlarilla, Joey G. "PLDT Opens Call Management Cneter to Monitor Center to Monitor Voice Traffic." Philippine Daily Inquirer 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAlarilla, Joey G. "PLDT Opens Call Management Cneter to Monitor Center to Monitor Voice Traffic." Philippine Daily Inquirer, 1999.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.