Vergara, A. Y. (1997). Keeping business all in the family. Philippine Daily Inquirer.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVergara, Alex Y. "Keeping Business All in the Family." Philippine Daily Inquirer 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVergara, Alex Y. "Keeping Business All in the Family." Philippine Daily Inquirer, 1997.
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