APA-Zitierstil (7. Ausg.)

(2013). Crowdsourcing geographic knowledge: Volunteered geographic information (VGI) in theory and practice. Springer. https://doi.org/10.1007/978-94-007-4587-2

Chicago-Zitierstil (17. Ausg.)

Crowdsourcing Geographic Knowledge: Volunteered Geographic Information (VGI) in Theory and Practice. Dordrecht [u.a.]: Springer, 2013. https://doi.org/10.1007/978-94-007-4587-2.

MLA-Zitierstil (9. Ausg.)

Crowdsourcing Geographic Knowledge: Volunteered Geographic Information (VGI) in Theory and Practice. Springer, 2013. https://doi.org/10.1007/978-94-007-4587-2.