@article{457494,
      author = {Ayala, César J. and Bernabe, Rafael.},
      url = {http://library.usi.edu/record/457494},
      title = {Puerto Rico in the American century a history since 1898 /  [electronic resource] :},
      publisher = {University of North Carolina Press,},
      recid = {457494},
      pages = {xvi, 428 p. :},
      address = {Chapel Hill :},
      year = {2007},
}