@incollection{Enkvist64-style,
  author	= {Enkvist, NE},
  editor	= {Enkvist, N. E. and Spencer, J. and Gregory, M. J.},
  year		= {1964},
  title		= {On defining style: an essay in applied linguistics},
  booktitle	= {Linguistics and style},
  publisher	= {Oxford University Press},
  address	= {London},
  pages		= {1--56}
}