APA (7th ed.) Citation

Heywood, D. I., Cornelius, S., & Carver, S. (2011). An introduction to geographical information systems (Fourth edition.). Prentice Hall.

Chicago Style (17th ed.) Citation

Heywood, D. Ian, Sarah Cornelius, and Steve Carver. An Introduction to Geographical Information Systems. Fourth edition. Harlow, England: Prentice Hall, 2011.

MLA (8th ed.) Citation

Heywood, D. Ian, et al. An Introduction to Geographical Information Systems. Fourth edition. Prentice Hall, 2011.