@Book{W14-21:2014,
  editor    = {Nancy Green  and  Kevin Ashley  and  Diane Litman  and  Chris Reed  and  Vern Walker},
  title     = {Proceedings of the First Workshop on Argumentation Mining},
  month     = {June},
  year      = {2014},
  address   = {Baltimore, Maryland},
  publisher = {Association for Computational Linguistics},
  url       = {http://www.aclweb.org/anthology/W/W14/W14-21}
}