APA Citation

Sui, D. Z. 1., Elwood, S., & Goodchild, M. F. (2013). Crowdsourcing geographic knowledge: Volunteered geographic information (VGI) in theory and practice. Dordrecht ; New York: Springer.

Chicago Style Citation

Sui, Daniel Z. 1965-, Sarah Elwood, and Michael F. Goodchild. Crowdsourcing Geographic Knowledge: Volunteered Geographic Information (VGI) in Theory and Practice. Dordrecht ; New York: Springer, 2013.

MLA Citation

Sui, Daniel Z. 1965-, Sarah Elwood, and Michael F. Goodchild. Crowdsourcing Geographic Knowledge: Volunteered Geographic Information (VGI) in Theory and Practice. Dordrecht ; New York: Springer, 2013.

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