de By, R. A., Wenk, C. C., & By, R. A. d. C. (2014). Geocrowd 2014: Proceedings of the 3rd ACM SIGSPATIAL International Workshop on Crowdsourced and Volunteered Geographic Information : November 4th, 2014, Dallas, Texas, USA. ACM.
Cita Chicago Style (17a ed.)de By, Rolf A., Carola Contributor Wenk, y Rolf A. de Contributor By. Geocrowd 2014: Proceedings of the 3rd ACM SIGSPATIAL International Workshop on Crowdsourced and Volunteered Geographic Information : November 4th, 2014, Dallas, Texas, USA. [Place of publication not identified]: ACM, 2014.
Cita MLA (9a ed.)de By, Rolf A., et al. Geocrowd 2014: Proceedings of the 3rd ACM SIGSPATIAL International Workshop on Crowdsourced and Volunteered Geographic Information : November 4th, 2014, Dallas, Texas, USA. ACM, 2014.
