@incollection{Threadgold87-change,
  author	= {Trevarthen, Colwyn},
  editor	= {Steele, R. and Threadgold, T.},
  year		= {1987},
  title		= {Sharing making sense: intersubjectivity and the making of an infant's meaning},
  booktitle	= {Language Topics: essays in honour of Michael Halliday},
  publisher	= {Benjamins},
  address	= {Amsterdam},
  pages		= {549--597}
}