APA (7th ed.) Citation

Heywood, D. I., Carver, S., & Cornelius, S. (2002). An introduction to geographical information systems (2nd ed.). Prentice Hall.

Chicago Style (17th ed.) Citation

Heywood, D. Ian, Steve Carver, and Sarah Cornelius. An Introduction to Geographical Information Systems. 2nd ed. Harlow, England New York: Prentice Hall, 2002.

MLA (9th ed.) Citation

Heywood, D. Ian, et al. An Introduction to Geographical Information Systems. 2nd ed. Prentice Hall, 2002.