@book{LittkemannHoltupSchulte2009,
  author    = {Littkemann, J. and Holtup, M. and Schulte, K.},
  title     = {Buchf{\"u}hrung: Grundlagen - {\"U}bungen - Klausurvorbereitung},
  edition   = {4. Aufl.},
  publisher = {Gabler},
  address   = {Wiesbaden},
  isbn      = {3834919144},
  year      = {2009},
  language  = {mul}
}
@book{LittkemannHoltupSchulte2008,
  author    = {Littkemann, J. and Holtup, M. and Schulte, K.},
  title     = {Buchf{\"u}hrung: Grundlagen - {\"U}bungen - Klausurvorbereitung},
  edition   = {3. Aufl.},
  publisher = {Gabler},
  address   = {Wiesbaden},
  isbn      = {3834908576},
  year      = {2008},
  language  = {mul}
}
@book{LittkemannHoltupSchulte2007,
  author    = {Littkemann, J. and Holtup, M. and Schulte, K.},
  title     = {Buchf{\"u}hrung: Grundlagen - {\"U}bungen - Klausurvorbereitung},
  edition   = {2. Aufl.},
  publisher = {Gabler},
  address   = {Wiesbaden},
  isbn      = {3834905585},
  year      = {2007},
  language  = {mul}
}
@book{LittkemannHoltupSchulte2006,
  author    = {Littkemann, J. and Holtup, M. and Schulte, K.},
  title     = {Buchf{\"u}hrung: Grundlagen - {\"U}bungen - Klausurvorbereitung},
  publisher = {Gabler},
  address   = {Wiesbaden},
  isbn      = {3409127070},
  year      = {2006},
  language  = {mul}
}
@book{LittkemannHoltupSchulte2012,
  author    = {Littkemann, J. and Holtup, M. and Schulte, K.},
  title     = {Buchf{\"u}hrung: Grundlagen - {\"U}bungen - Klausurvorbereitung},
  edition   = {5. Aufl.},
  publisher = {Gabler},
  address   = {Wiesbaden},
  isbn      = {978-3834934178},
  year      = {2012},
  language  = {mul}
}