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APA Citation

Sui, D., Elwood, S., & Goodchild, M. (2012). Crowdsourcing geographic knowledge: Volunteered geographic information (VGI) in theory and practice. Springer.

Chicago Style Citation

Sui, Daniel, Sarah Elwood, and Michael Goodchild. Crowdsourcing Geographic Knowledge: Volunteered Geographic Information (VGI) in Theory and Practice. Heidelberg: Springer, 2012.

MLA Citation

Sui, Daniel, et al. Crowdsourcing Geographic Knowledge: Volunteered Geographic Information (VGI) in Theory and Practice. Springer, 2012.

Harvard Style Citation

Sui, D., Elwood, S. & Goodchild, M. 2012. Crowdsourcing geographic knowledge: Volunteered geographic information (VGI) in theory and practice. Heidelberg: Springer.

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