Dyfyniad APA

Aronoff, S. (1989). Geographic information systems: A management perspective (1a. ed.). WDL Publications.

Dyfyniad Arddull Chicago

Aronoff, Stan. Geographic Information Systems: A Management Perspective. 1a. ed. Ottawa: WDL Publications, 1989.

Dyfyniad MLA

Aronoff, Stan. Geographic Information Systems: A Management Perspective. 1a. ed. WDL Publications, 1989.

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