APA Citatie

ball Desmond and Babbage Ross. (1989). Geographic information systems: Defence applications. Pergamon.

Chicago Style citaat

ball Desmond and Babbage Ross. Geographic Information Systems: Defence Applications. Australia: Pergamon, 1989.

MLA citatie

ball Desmond and Babbage Ross. Geographic Information Systems: Defence Applications. Pergamon, 1989.

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