Cita APA (7th ed.)
Bolstad, P. (2016). GIS fundamentals: A first text on geographic information systems (5th ed.). XanEdu Eider Press.
Cita Chicago (17th ed.)
Bolstad, Paul. GIS Fundamentals: A First Text on Geographic Information Systems. 5th ed. Acton, MA : White Bear Lake, Minnesota: XanEdu Eider Press, 2016.
Cita MLA (9th ed.)
Bolstad, Paul. GIS Fundamentals: A First Text on Geographic Information Systems. 5th ed. XanEdu Eider Press, 2016.
Atenció: Aquestes cites poden no estar 100% correctes.