@incollection{Hasan92-meaning,
  author	= {Hasan, Ruqaiya},
  editor	= {Bolton, Kingsley and Kwok, Helen},
  year		= {1992},
  title		= {Meaning in sociolinguistics theory},
  booktitle	= {Sociolinguistics today: international perspectives},
  publisher	= {Routledge. 80-119},
  address	= {London and New York}
}