APA (7th ed.) Citation

Heywood, I., Cornelius, S., & Carver, S. (2003). An Introduction to Geographical Information Systems (2nd ed.). Pearson Education (Singapore) Pte. Ltd.

Chicago Style (17th ed.) Citation

Heywood, Ian, Sarah Cornelius, and Steve Carver. An Introduction to Geographical Information Systems. 2nd ed. Delhi: Pearson Education (Singapore) Pte. Ltd, 2003.

MLA (9th ed.) Citation

Heywood, Ian, et al. An Introduction to Geographical Information Systems. 2nd ed. Pearson Education (Singapore) Pte. Ltd, 2003.