@article{904404,
      author = {Knowles, Dudley.},
      url = {http://library.usi.edu/record/904404},
      title = {Political obligation a critical introduction / [electronic  resource] :},
      publisher = {Routledge,},
      recid = {904404},
      pages = {xii, 219 p.},
      address = {Milton Park, Abingdon, Oxon ;},
      year = {2009},
}