@book{OPUS4-1989,
  title     = {21 Fallstudien aus dem Handel},
  series = {Fallstudiensammlung},
  volume    = {2},
  editor    = {Patrick Siegfried},
  publisher = {AVM},
  address   = {M{\"u}nchen},
  isbn      = {978-3-86924-474-7},
  pages     = {219},
  year      = {2013},
  language  = {de}
}