@article{316249,
      recid = {316249},
      author = {Geer, John Gray.},
      title = {In defense of negativity : attack ads in presidential  campaigns /},
      publisher = {University of Chicago Press,},
      address = {Chicago :},
      pages = {xvii, 201 p. :},
      year = {2006},
      url = {http://library.usi.edu/record/316249},
}