@article{270772,
      note = {"A Sage reference publication."},
      author = {DiStefano, Anna. and Rudestam, Kjell Erik. and Silverman,  Robert J.},
      url = {http://library.usi.edu/record/270772},
      title = {Encyclopedia of distributed learning /},
      publisher = {Sage Publications,},
      recid = {270772},
      pages = {xxvi, 549 p. :},
      address = {Thousand Oaks, Calif. :},
      year = {2004},
}