@incollection{Halliday57,
  author	= {Halliday, M. A. K.},
  year		= {1957},
  booktitle	= {Studies in Linguistic Analysis},
  title		= {Some aspects of systematic description and comparison in grammatical analysis},
  publisher	= {Blackwell},
  address	= {Oxford},
  pages		= {54--67}
}