@article{694567,
      author = {Greif, Geoffrey L. and Ephross, Paul H.},
      url = {http://library.usi.edu/record/694567},
      title = {Group work with populations at risk /},
      publisher = {Oxford University Press,},
      recid = {694567},
      pages = {xiii, 522 p. :},
      address = {Oxford ;},
      year = {2011},
}