Cita APA

(2013). Crowdsourcing geographic knowledge: Volunteered Geographic Information (VGI) in Theory and Practice.

Citación estilo Chicago

Crowdsourcing Geographic Knowledge: Volunteered Geographic Information (VGI) in Theory and Practice. 2013.

Cita MLA

Crowdsourcing Geographic Knowledge: Volunteered Geographic Information (VGI) in Theory and Practice. 2013.

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