@article{20001,
      author = {Stack, Ruth H.},
      url = {http://library.usi.edu/record/20001},
      title = {HMOs from the management perspective /},
      publisher = {AMACOM,},
      recid = {20001},
      pages = {49 p. :},
      address = {New York :},
      year = {1979},
}