David, R. J. (1999). The Trouble with e-mail. IN At large [column]. Philippine Daily Inquirer.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDavid, Rina Jimenez. "The Trouble with E-mail. IN At Large [column]." Philippine Daily Inquirer 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDavid, Rina Jimenez. "The Trouble with E-mail. IN At Large [column]." Philippine Daily Inquirer, 1999.
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