APA
Zhang D., Association for Computing Machinery, ACM Special Interest Group on Spatial Information, ACM Special Interest Group on Computer-Human Interaction & ACM Special Interest Group on Mobility of Systems U. D. a. C. (2011). Proceedings of 1st international symposium on From digital footprints to social and community intelligence. New York, NY: ACM.
Chicago
Zhang Daqing, Association for Computing Machinery, ACM Special Interest Group on Spatial Information, ACM Special Interest Group on Computer-Human Interaction and ACM Special Interest Group on Mobility of Systems Users Data and Computing. 2011. Proceedings of 1st international symposium on From digital footprints to social and community intelligence. New York, NY: ACM.
Harvard
Zhang D., Association for Computing Machinery, ACM Special Interest Group on Spatial Information, ACM Special Interest Group on Computer-Human Interaction and ACM Special Interest Group on Mobility of Systems U. D. a. C. (2011). Proceedings of 1st international symposium on From digital footprints to social and community intelligence. New York, NY: ACM.
MLA
Zhang Daqing, Association for Computing Machinery, ACM Special Interest Group on Spatial Information, ACM Special Interest Group on Computer-Human Interaction and ACM Special Interest Group on Mobility of Systems Users Data and Computing. Proceedings of 1st international symposium on From digital footprints to social and community intelligence. New York, NY: ACM. 2011.