@incollection{Hasan93,
  author	= {Hasan, Ruqaiya},
  editor	= {Alatis, James E.},
  year		= {1993},
  title		= {Contexts for meaning},
  booktitle	= {Georgetown University Round Table on Language and Linguistics 1992: language, communication and social meaning},
  publisher	= {Georgetown University Press},
  address	= {Washington, D.C.},
  pages		= {79--103}
}