@incollection{Wells-etal81,
  author	= {Wells, E. and MacLure, M. and Montgomery, M.},
  editor	= {Werth, Paul},
  year		= {1981},
  title		= {Some strategies for sustaining conversation},
  booktitle	= {Conversation, Speech, and Discourse},
  publisher	= {Croom Helm},
  address	= {London},
  pages		= {73--85}
}