@incollection{Martin79,
  author	= {Martin, James R.},
  editor	= {Halliday, M. A. K.},
  year		= {1979},
  title		= {Coherence in student composition},
  booktitle	= {Working conference on language in education: report to participants},
  publisher	= {Sydney University Extension Program and Department of Linguistics},
  address	= {Sydney},
  pages		= {14--31}
}