@article{475319,
      note = {Originally published: 1991.},
      author = {Wertsch, James V.},
      url = {http://library.usi.edu/record/475319},
      title = {Voices of the mind a sociocultural approach to mediated  action / [electronic resource] :},
      publisher = {Harvard University Press,},
      recid = {475319},
      pages = {viii, 169 p.},
      address = {Cambridge, MA :},
      year = {1993},
}