Cita APA

SpringerLink (Online service), Sui, D., Elwood, S., & Goodchild, M. (2013). Crowdsourcing Geographic Knowledge: Volunteered Geographic Information (VGI) in Theory and Practice (1st ed. 2013.). Dordrecht: Springer Netherlands : Imprint: Springer.

Citación estilo Chicago

SpringerLink (Online service), Daniel Sui, Sarah Elwood, y Michael Goodchild. Crowdsourcing Geographic Knowledge: Volunteered Geographic Information (VGI) in Theory and Practice. 1st ed. 2013. Dordrecht: Springer Netherlands : Imprint: Springer, 2013.

Cita MLA

SpringerLink (Online service), Daniel Sui, Sarah Elwood, y Michael Goodchild. Crowdsourcing Geographic Knowledge: Volunteered Geographic Information (VGI) in Theory and Practice. 1st ed. 2013. Dordrecht: Springer Netherlands : Imprint: Springer, 2013.