Goodchild. Proceedings of the 1st ACM SIGSPATIAL International Workshop on Crowdsourced and Volunteered Geographic Information. Association for Computing Machinery (ACM).
Cita Chicago Style (17a ed.)Goodchild. Proceedings of the 1st ACM SIGSPATIAL International Workshop on Crowdsourced and Volunteered Geographic Information. Association for Computing Machinery (ACM).
Cita MLA (9a ed.)Goodchild. Proceedings of the 1st ACM SIGSPATIAL International Workshop on Crowdsourced and Volunteered Geographic Information. Association for Computing Machinery (ACM).
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