APA (7e ed.) Bronvermelding

Não informado. (2003). ARC News. Environmental Systems Research Institute.

Chicago (17e ed.) Bronvermelding

Não informado. ARC News. Redlands, Calif: Environmental Systems Research Institute, 2003.

MLA (8e ed.) Bronvermelding

Não informado. ARC News. Environmental Systems Research Institute, 2003.

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