Cita APA (7a ed.)
Longley, P. A. Geographic Information Systems and Science. Wiley.
Cita estilo Chicago (17a ed.)
Longley, Paul A. Geographic Information Systems and Science. Chichester, Inglaterra: Wiley.
Cita MLA (9a ed.)
Longley, Paul A. Geographic Information Systems and Science. Wiley.
Precaución: Estas citas no son 100% exactas.