@incollection{Tversky96,
  author	= {Tversky, B.},
  editor	= {Bloom, P. and Peterson, M. A. and Nadel, L. and Garrett, M. F.},
  title		= {Spatial Perspective in Descriptions},
  booktitle	= {Language and Space},
  publisher	= {MIT Press},
  year		= {1996},
  address	= {Cambridge, MA}
}