Tohutoro APA (7th ed.)

Heywood, I., Cornelius, S., & Carver, S. (2011). An introduction to geographical information systems (4a. ed.). Pearson Education Limited.

Tohutoru Kātū Chicago (17th ed.)

Heywood, Ian, Sarah Cornelius, me Steve Carver. An Introduction to Geographical Information Systems. 4a. ed. Essex: Pearson Education Limited, 2011.

Tohutoro MLA (9th ed.)

Heywood, Ian, et al. An Introduction to Geographical Information Systems. 4a. ed. Pearson Education Limited, 2011.