@incollection{Merchel2005,
  author    = {Joachim Merchel},
  title     = {Qualit{\"a}tsentwicklung},
  booktitle = {Dieter Kreft, Ingrid Mielenz(Hg.): W{\"o}rterbuch Soziale Arbeit},
  edition   = {5. Aufl.},
  isbn      = {3-7799-2060-3},
  year      = {2005},
}