(1997). Implementing rules and regulations of the Government Service Insurance System Act of 1997. Philippine Star.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र"Implementing Rules and Regulations of the Government Service Insurance System Act of 1997." Philippine Star 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्र"Implementing Rules and Regulations of the Government Service Insurance System Act of 1997." Philippine Star, 1997.
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