@article{437032,
      author = {Bisson, Thomas N.},
      url = {http://library.usi.edu/record/437032},
      title = {The crisis of the twelfth century : power, lordship, and  the origins of European government /},
      publisher = {Princeton University Press,},
      recid = {437032},
      pages = {xxviii, 677 p., [9] p. of plates :},
      address = {Princeton, N.J. :},
      year = {2009},
}