@article{Torr98,
  author	= {Torr, J.},
  title		= {The development of modality in the pre-school years: Language as a vehicle for understanding the possibilities and obligations in everyday life},
  journal	= {Functions of Language},
  year		= {1998},
  volume	= {5},
  number	= {2},
  pages		= {157--178}
}