Government Service Insurance System (GSIS). (2011). GSIS art competition: 2011. [Government Service Insurance System].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGovernment Service Insurance System (GSIS). GSIS Art Competition: 2011. [Pasay City]: [Government Service Insurance System], 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGovernment Service Insurance System (GSIS). GSIS Art Competition: 2011. [Government Service Insurance System], 2011.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.