APA (7th ed.) Citation

Jensen, J. R., & Jensen, R. R. (2013). Introductory geographic information systems (International ed.). Pearson.

Chicago Style (17th ed.) Citation

Jensen, John R., and Ryan R. Jensen. Introductory Geographic Information Systems. International ed. Boston: Pearson, 2013.

MLA (9th ed.) Citation

Jensen, John R., and Ryan R. Jensen. Introductory Geographic Information Systems. International ed. Pearson, 2013.