@book{JungHeinzenQuarg2018,
  author    = {Jung, R{\"u}diger and Heinzen, Mareike and Quarg, Sabine},
  title     = {Allgemeine Managementlehre},
  publisher = {Erich Schmidt Verlag},
  address   = {Berlin},
  isbn      = {978-3-503-17715-8},
  pages     = {XXVI, 685},
  year      = {2018},
  language  = {de}
}
@book{JungHeinzenQuarg2016,
  author    = {Jung, R{\"u}diger and Heinzen, Mareike and Quarg, Sabine},
  title     = {Allgemeine Managementlehre},
  publisher = {Erich Schmidt Verlag},
  address   = {Berlin},
  isbn      = {978-3-503-16722-7},
  pages     = {679},
  year      = {2016},
  language  = {de}
}