@incollection{SpencerGregory64,
  author	= {Spencer, J. and Gregory, M. J.},
  editor	= {Enkvist, N. E. and Spencer, J. and Gregory, M. J.},
  title		= {An approach to the study of style},
  year		= {1964},
  booktitle	= {Linguistics and style},
  publisher	= {Oxford University Press},
  address	= {London},
  pages		= {57--105}
}