@incollection{Halliday85-casual,
  author	= {Halliday, M. A. K.},
  editor	= {Hasan, Ruqaiya},
  year		= {1985},
  title		= {A grammar for casual conversation?},
  booktitle	= {Discourse on discourse},
  address	= {Applied Linguistics Association of Australia},
  pages		= {30--33}
}