एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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