@book{ToprakWeitzel2017,
  author    = {Ahmet Toprak and Gerrit Weitzel},
  title     = {Deutschland das Einwanderungsland},
  publisher = {Springer},
  address   = {Wiesbaden},
  isbn      = {978-3-658-15911-5},
  pages     = {38},
  year      = {2017},
  language  = {de}
}