@incollection{Gregory85,
  author	= {Gregory, Michael J.},
  editor	= {Benson, James D. and Greaves, William S.},
  year		= {1985},
  title		= {Towards communication linguistics: a framework},
  booktitle	= {Systemic Perspectives on Discourse, Volume 1},
  publisher	= {Ablex},
  address	= {Norwood, New Jersey}
}