@incollection{Halliday80,
  author	= {Halliday, M. A. K.},
  editor	= {al, Sidney Greenbaum et},
  year		= {1980},
  title		= {On being teaching},
  booktitle	= {Studies in English linguistics: for Randolph Quirk},
  publisher	= {Longman},
  address	= {London}
}