Trích dẫn APA

Verplanke, J. (2020). Geo - location by proxy: Approaching VGI from the perspective of geographic context :Powerpoint. University of Twente.

Trích dẫn kiểu Chicago

Verplanke, J.J. Geo - Location By Proxy: Approaching VGI From the Perspective of Geographic Context :Powerpoint. University of Twente, 2020.

Trích dẫn MLA

Verplanke, J.J. Geo - Location By Proxy: Approaching VGI From the Perspective of Geographic Context :Powerpoint. University of Twente, 2020.

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