@incollection{Henderson87,
  author	= {Henderson, Eug{\'e}nie},
  editor	= {Steele, Ross and Threadgold, Terry},
  year		= {1987},
  title		= {J.R. Firth in retrospect: a view from the eighties},
  booktitle	= {Language Topics: essays in honour of Michael Halliday},
  volume	= {1},
  publisher	= {John Benjamins Publishing Co.},
  address	= {Amsterdam and Philadelphia}
}