Cita APA (7th ed.)

Longley, P., Goodchild, M. F., Maguire, D. J., & Rhind, D. (2015). Geographic information science & systems (Fourth edition.). John Wiley & Sons, Inc.

Cita Chicago (17th ed.)

Longley, Paul, Michael F. Goodchild, David J. Maguire, i David Rhind. Geographic Information Science & Systems. Fourth edition. Hoboken, NJ: John Wiley & Sons, Inc, 2015.

Cita MLA (9th ed.)

Longley, Paul, et al. Geographic Information Science & Systems. Fourth edition. John Wiley & Sons, Inc, 2015.