@incollection{Halliday78-construction,
  author	= {Halliday, M. A. K.},
  editor	= {Jr, Herbert L. Pick and Saltzman, Elliot},
  year		= {1978},
  title		= {Meaning and the construction of reality in early childhood},
  booktitle	= {Modes of perceiving and processing information},
  pages		= {67--96},
  publisher	= {Erlbaum},
  address	= {Hillsdale}
}