@book{AppelfellerBuchholz2011,
  author    = {Wieland Appelfeller and Wolfgang Buchholz},
  title     = {Supplier Realtionship Management - Strategie, Organisation und IT des modernen Beschaffungsmanagements},
  edition   = {2.},
  isbn      = {978-3-8349-1809-3},
  year      = {2011},
}