@article{782626,
      author = {Della Porta, Donatella, and Keating, Michael,},
      url = {http://library.usi.edu/record/782626},
      title = {Approaches and methodologies in the social sciences a  pluralist perspective / [electronic resource] :},
      publisher = {Cambridge University Press,},
      recid = {782626},
      pages = {xv, 365 p.},
      address = {Cambridge :},
      year = {2008},
}