@article{366577,
      recid = {366577},
      author = {Renninger, K. Ann. and Shumar, Wesley.},
      title = {Building virtual communities learning and change in  cyberspace / [electronic resource] :},
      publisher = {Cambridge University Press,},
      address = {New York :},
      pages = {xxxi, 380 p. :},
      year = {2002},
      url = {http://library.usi.edu/record/366577},
}