Proceedings of the 2009 ACM International Conference on Supporting Group Work. Association for Computing Machinery (ACM).
Čikaški stil citiranja (17. izdanje)Proceedings of the 2009 ACM International Conference on Supporting Group Work. Association for Computing Machinery (ACM).
MLA način citiranja (8. izdanje)Proceedings of the 2009 ACM International Conference on Supporting Group Work. Association for Computing Machinery (ACM).
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