Burgonio, T. (1998). Tulfo shows proof Hubert was in US. Philippine Daily Inquirer.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBurgonio, T.J. "Tulfo Shows Proof Hubert Was in US." Philippine Daily Inquirer 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBurgonio, T.J. "Tulfo Shows Proof Hubert Was in US." Philippine Daily Inquirer, 1998.
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