APA (7th ed.) Citation
Jensen, J. R., & Jensen, R. R. (2013). Introductory geographic information systems. Pearson.
Chicago Style (17th ed.) Citation
Jensen, John R., and Ryan R. Jensen. Introductory Geographic Information Systems. Boston: Pearson, 2013.
MLA (9th ed.) Citation
Jensen, John R., and Ryan R. Jensen. Introductory Geographic Information Systems. Pearson, 2013.
Warning: These citations may not always be 100% accurate.