@book{vonSpiegel2000,
  author    = {von Spiegel, Hiltrud},
  title     = {Jugendarbeit mit Erfolg},
  edition   = {1. Aufl.},
  publisher = {Votum},
  address   = {M{\"u}nster},
  isbn      = {3-933158-35-4},
  pages     = {252 S. : graph. Darst.},
  year      = {2000},
  language  = {de}
}
@book{vonSpiegelMaus2000,
  author    = {von Spiegel, Hiltrud and Maus, Friedrich},
  title     = {Mythos Qualit{\"a}t},
  volume    = {1},
  edition   = {1. Aufl.},
  publisher = {VWB, Verl. f{\"u}r Wiss. und Bildung},
  address   = {Berlin},
  isbn      = {3-86135-095-5},
  pages     = {209 S. : graph. Darst.},
  year      = {2000},
  language  = {de}
}