@incollection{Martin2002-universe,
  author	= {Martin, James R.},
  editor	= {Johns, A. M.},
  title		= {A universe of meaning - how many practices?},
  booktitle	= {Genres in the Classroom: multiple perspectives},
  address	= {Mahwah, NJ},
  publisher	= {Lawrence Erlbaum},
  year		= {2002},
  pages		= {269--278}
}