Cita APA (7a ed.)

Heywood, D. I., Cornelius, S., & Carver, S. (2002). An introduction to geographical information systems. Prentice Hall.

Cita Chicago Style (17a ed.)

Heywood, D. Ian, Sarah Cornelius, y Steve Carver. An Introduction to Geographical Information Systems. Harlow, England ; New York: Prentice Hall, 2002.

Cita MLA (9a ed.)

Heywood, D. Ian, et al. An Introduction to Geographical Information Systems. Prentice Hall, 2002.