@book{MetteCzechKuenzeletal.2003,
  author    = {Dieter Mette and Olaf Czech and Matthias K{\"u}nzel and Bernd Meier and Helmut Meschenmoser and Ulf Stopperka and Heidi Traue},
  title     = {Arbeitslehre aktuell : Arbeit, Wirtschaft 2 ; Sch{\"u}lerband},
  isbn      = {978-3-637-88766-4},
  year      = {2003},
}