Robas, S. W. (2003). Firm makes a name in metal engraving business. Philippine Daily Inquirer.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRobas, Sharon Wendy. "Firm Makes a Name in Metal Engraving Business." Philippine Daily Inquirer 2003.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRobas, Sharon Wendy. "Firm Makes a Name in Metal Engraving Business." Philippine Daily Inquirer, 2003.
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