Cita APA (7th ed.)

Longley, P. (2015). Geographic information science & systems (4th ed.). Wiley.

Cita Chicago (17th ed.)

Longley, Paul. Geographic Information Science & Systems. 4th ed. Hoboken, NJ: Wiley, 2015.

Cita MLA (9th ed.)

Longley, Paul. Geographic Information Science & Systems. 4th ed. Wiley, 2015.