Gaya APA

, ., Tomlinson, R. (2011). Thinking about GIS: Geographic Information System Planning for Managers . Trade paperback, Esri Press, 2: Trade paperback, Esri Press, 2011.

Gaya MLA

, ., Tomlinson, Roger. "Thinking about GIS: Geographic Information System Planning for Managers". Trade paperback, Esri Press, 2: Trade paperback, Esri Press, 2011, 2011. .