@InProceedings{Danescu-Niculescu-Mizil+al:13b,
  author={Cristian Danescu-Niculescu-Mizil and Moritz Sudhof and Dan Jurafsky 
  and Jure Leskovec and Christopher Potts},
  title={A computational approach to politeness with application to social factors},
  booktitle={Proceedings of ACL},
  year={2013}
}