@article{321432,
      author = {Henschel, Astrid.},
      url = {http://library.usi.edu/record/321432},
      title = {German verb tenses /},
      publisher = {McGraw-Hill,},
      recid = {321432},
      pages = {viii, 264 p. ;},
      address = {Chicago :},
      year = {2006},
}