@incollection{Butler88-Canterbury,
  author	= {Butler, Christopher S.},
  editor	= {Steiner, Erich and Veltman, Robert},
  year		= {1988},
  title		= {Systemic linguistics, semantics and pragmatics},
  booktitle	= {Pragmatics, discourse and text. Some systemically inspired approaches},
  publisher	= {Frances Pinter},
  address	= {London}
}