@incollection{Nesbitt88,
  author	= {Nesbitt, Christopher N. and Plum, Guenter},
  editor	= {Fawcett, Robin P. and Young, David},
  year		= {1988},
  title		= {Probabilities in a systemic grammar: the clause complex in English},
  booktitle	= {New developments in systemic linguistics},
  publisher	= {Frances Pinter},
  address	= {London}
}