APA aipamena

Government Service Insurance System (GSIS). (2011). GSIS art competition: 2011. [Government Service Insurance System].

Chicago Style aipamena

Government Service Insurance System (GSIS). GSIS Art Competition: 2011. [Pasay City]: [Government Service Insurance System], 2011.

MLA aipamena

Government Service Insurance System (GSIS). GSIS Art Competition: 2011. [Government Service Insurance System], 2011.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.