@book{CzechZoellnerSachsetal.1993,
  author    = {Olaf Czech and Hermann Z{\"o}llner and Burkhard Sachs and Horst Ziefuss and Hans-Joachim Laabs},
  title     = {Lehrerbildung im Lernfeld Arbeitslehre},
  editor    = {Bernd Meier},
  isbn      = {3-89342-005-3},
  year      = {1993},
}