Heywood, D. I., Cornelius, S., & Carver, S. (2011). An introduction to geographical information systems Ian Heywood, Sarah Cornelius, Steve Carver (4th ed.). Prentice Hall.
Chicago Style (17th ed.) CitationHeywood, D. Ian, Sarah Cornelius, and Steve Carver. An Introduction to Geographical Information Systems Ian Heywood, Sarah Cornelius, Steve Carver. 4th ed. Harlow: Prentice Hall, 2011.
MLA (9th ed.) CitationHeywood, D. Ian, et al. An Introduction to Geographical Information Systems Ian Heywood, Sarah Cornelius, Steve Carver. 4th ed. Prentice Hall, 2011.
Warning: These citations may not always be 100% accurate.