APA-viite (7. p.)

Longley, P. (2001). Geographic information systems and science. Wiley.

Chicago-viite (17. p.)

Longley, Paul. Geographic Information Systems and Science. Chichester, [Eng.]: Wiley, 2001.

MLA-viite (9. p.)

Longley, Paul. Geographic Information Systems and Science. Wiley, 2001.