@book{vonSpiegel1993,
  author    = {von Spiegel, Hiltrud},
  title     = {Aus Erfahrung lernen},
  edition   = {1, Aufl.},
  publisher = {Votum},
  address   = {M{\"u}nster},
  isbn      = {3-926549-80-7},
  pages     = {255 S.},
  year      = {1993},
  language  = {de}
}
@book{Hoffmann1993,
  author    = {Hoffmann, Bernward},
  title     = {Medienp{\"a}dagogik im kirchlichen Feld},
  edition   = {1. Aufl.},
  publisher = {Fischer},
  address   = {M{\"u}nchen},
  isbn      = {3-88927-138-3},
  pages     = {350 S. : graph. Darst.},
  year      = {1993},
  language  = {de}
}