(1999). The worker, the employee and the SSS: A dynamic partnership into the next millennium. Manila Bulletin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र"The Worker, the Employee and the SSS: A Dynamic Partnership into the Next Millennium." Manila Bulletin 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्र"The Worker, the Employee and the SSS: A Dynamic Partnership into the Next Millennium." Manila Bulletin, 1999.
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