APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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

Let op: Deze citaties zijn niet altijd 100% accuraat.