@incollection{HallidayPlum85,
  author	= {Halliday, M. A. K. and Plum, Guenter A.},
  editor	= {Hasan, Ruqaiya},
  year		= {1985},
  title		= {On Casual Conversation},
  booktitle	= {Discourse on discourse},
  publisher	= {ALAA},
  address	= {Wollongong, NSW}
}