APA   Click to copy
Gansner, E., Hu, Y., Kobourov, S., & Volinsky, C. (2009). Putting recommendations on the map: visualizing clusters and relations. In Proceedings of the third ACM conference on Recommender systems (pp. 345–348). ACM.

Chicago/Turabian   Click to copy
Gansner, Emden, Yifan Hu, Stephen Kobourov, and Chris Volinsky. “Putting Recommendations on the Map: Visualizing Clusters and Relations.” In Proceedings of the Third ACM Conference on Recommender Systems, 345–348. ACM, 2009.

MLA   Click to copy
Gansner, Emden, et al. “Putting Recommendations on the Map: Visualizing Clusters and Relations.” Proceedings of the Third ACM Conference on Recommender Systems, ACM, 2009, pp. 345–48.

@inproceedings{gansner2009a,
  title = {Putting recommendations on the map: visualizing clusters and relations},
  year = {2009},
  organization = {ACM},
  pages = {345--348},
  author = {Gansner, Emden and Hu, Yifan and Kobourov, Stephen and Volinsky, Chris},
  booktitle = {Proceedings of the third ACM conference on Recommender systems}
}