@book{LittkemannKlausKlaus2019,
  author    = {Littkemann, J{\"o}rn and Klaus, Derfuß and Klaus, Schulte},
  title     = {{\"U}bungen zum Controlling, Band 2},
  editor    = {Littkemann, J{\"o}rn},
  publisher = {BoD Books on Demand},
  address   = {Norderstedt},
  isbn      = {978-3-7431-6555-7},
  publisher      = {FH M{\"u}nster - University of Applied Sciences},
  pages     = {184},
  year      = {2019},
  language  = {de}
}
@book{LittkemannHoltrupSchulte2016,
  author    = {Littkemann, J{\"o}rn and Holtrup, Michael and Schulte, Klaus},
  title     = {Buchf{\"u}hrung: Grundlagen, {\"U}bungen, Klausurvorbereitung},
  publisher = {Books on Demand},
  address   = {Norderstedt},
  isbn      = {9783739223926},
  publisher      = {FH M{\"u}nster - University of Applied Sciences},
  pages     = {356},
  year      = {2016},
  language  = {de}
}