@book{QuargJungBruck2008,
  author    = {Quarg, Sabine and Jung, R{\"u}diger H. and Bruck, J{\"u}rgen},
  title     = {Allgemeine Managementlehre},
  publisher = {E. Schmidt},
  address   = {Berlin},
  isbn      = {978-3-503-11240-1},
  pages     = {XVIII, 635},
  year      = {2008},
  language  = {de}
}
@book{Schr{\"o}pf2008,
  author    = {Schr{\"o}pf, Ramona},
  title     = {Die fabelhafte Welt der Untertitelung},
  publisher = {VDM Verlag},
  address   = {Saarbr{\"u}cken},
  isbn      = {978-3-8364-4643-3},
  pages     = {XV, 151},
  year      = {2008},
  language  = {de}
}