@book{Wilhelm1994,
  author    = {Wilhelm, Edgar},
  title     = {Theater der Themen},
  volume    = {5},
  edition   = {1. Aufl.},
  publisher = {Bezirksamt Reinickendorf von Berlin},
  address   = {Berlin},
  pages     = {152 S. : zahlr. Ill.},
  year      = {1994},
  language  = {de}
}
@book{WilhelmBernward2004,
  author    = {Wilhelm, Edgar and Bernward, Hoffmann},
  title     = {Gestaltungsp{\"a}dagogik in der Sozialen Arbeit},
  edition   = {1. Aufl},
  publisher = {Sch{\"o}ningh},
  address   = {Paderborn},
  isbn      = {3-506-71706-5},
  pages     = {323 S},
  year      = {2004},
  language  = {de}
}