Cita APA (7th ed.)

Heywood, I., Cornelius, S., & Carver, S. (2010). Introduction to geographical information systems (3rd ed.). Pearson.

Cita Chicago (17th ed.)

Heywood, Ian, Sarah Cornelius, i Steve Carver. Introduction to Geographical Information Systems. 3rd ed. New Delhi: Pearson, 2010.

Cita MLA (9th ed.)

Heywood, Ian, et al. Introduction to Geographical Information Systems. 3rd ed. Pearson, 2010.