@incollection{Williams88,
  author	= {Williams, M. P.},
  editor	= {Steiner, Erich H. and Veltman, Robert},
  year		= {1988},
  title		= {Functional sentence perspective in the context of systemic functional grammar},
  booktitle	= {Pragmatics, Discourse and Text: some systemically-insights approaches},
  pages		= {76--89},
  publisher	= {Pinter Publishers},
  address	= {London}
}