Παραπομπή APA

Tomlinson, R. (2007). Thinking about GIS: Geographical information system planning for managers (3rd ed.). Redlands, CA.: ESRI Press.

Παραπομπή Chicago Style

Tomlinson, Roger. Thinking About GIS: Geographical Information System Planning for Managers. 3rd ed. Redlands, CA.: ESRI Press, 2007.

Παραπομπή MLA

Tomlinson, Roger. Thinking About GIS: Geographical Information System Planning for Managers. 3rd ed. Redlands, CA.: ESRI Press, 2007.

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