@incollection{Teitscheid1990,
  author    = {Teitscheid, Petra},
  title     = {Kapitel 7.2. {\"O}ffentlichkeitsarbeit},
  series = {BJU Umweltschutzberater},
  booktitle = {BJU Umweltschutzberater},
  year      = {1990},
  language  = {mul}
}