APA-referens

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

Chicago-stil citat

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

MLA-referens

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

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.