@inproceedings{Halliday75-lacus,
  author	= {Halliday, M. A. K.},
  year		= {1975},
  title		= {Language as social semiotic: towards a general sociolinguistic theory},
  address	= {Columbia, SC},
  booktitle	= {First LACUS Forum.},
  publisher	= {Hornbeam Press},
}