Goodchild, M. (2012). Proceedings of the 1st ACM SIGSPATIAL International Workshop on Crowdsourced and Volunteered Geographic Information. Association for Computing Machinery.
Chicago-Zitierstil (17. Ausg.)Goodchild, Mike. Proceedings of the 1st ACM SIGSPATIAL International Workshop on Crowdsourced and Volunteered Geographic Information. New York,NY,United States: Association for Computing Machinery, 2012.
MLA-Zitierstil (9. Ausg.)Goodchild, Mike. Proceedings of the 1st ACM SIGSPATIAL International Workshop on Crowdsourced and Volunteered Geographic Information. Association for Computing Machinery, 2012.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.