@article{10.4159/harvard.,
      author = {Helfferich, Tryntje,},
      url = {http://library.usi.edu/record/701491},
      title = {The Iron Princess Amalia Elisabeth and the Thirty Years  War / [electronic resource] :},
      publisher = {Harvard University Press,},
      number = {10.4159/harvard.},
      recid = {701491},
      pages = {1 online resource (319 pages)},
      address = {Cambridge, Massachusetts :},
      year = {2013},
}