@Book{EduApp:2011,
  editor    = {Joel Tetreault  and  Jill Burstein  and  Claudia Leacock},
  title     = {Proceedings of the Sixth Workshop on Innovative Use of NLP for Building Educational Applications},
  month     = {June},
  year      = {2011},
  address   = {Portland, Oregon},
  publisher = {Association for Computational Linguistics},
  url       = {http://www.aclweb.org/anthology/W11-14}
}