APA   Click to copy
Bell, R. M., Koren, Y., & Volinsky, C. (2007). Modeling Relationships at Multiple Scales to Improve Accuracy of Large Recommender Systems. In KDD '07: Proceedings of the 12th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (pp. 95–104).

Chicago/Turabian   Click to copy
Bell, Robert M., Yehuda Koren, and Chris Volinsky. “Modeling Relationships at Multiple Scales to Improve Accuracy of Large Recommender Systems.” In KDD '07: Proceedings of the 12th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, 95–104, 2007.

MLA   Click to copy
Bell, Robert M., et al. “Modeling Relationships at Multiple Scales to Improve Accuracy of Large Recommender Systems.” KDD '07: Proceedings of the 12th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, 2007, pp. 95–104.

@inproceedings{bell2007a,
  title = {Modeling Relationships at Multiple Scales to Improve Accuracy of Large Recommender Systems},
  year = {2007},
  pages = {95--104},
  author = {Bell, Robert M. and Koren, Yehuda and Volinsky, Chris},
  booktitle = {KDD '07: Proceedings of the 12th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining}
}