@book{Toprak2017,
  author    = {Toprak, Ahmet},
  title     = {Auch Alis werden Professor},
  publisher = {Lambertus},
  address   = {Freiburg im Breisgau},
  isbn      = {978-3-7841-3020-0},
  pages     = {168},
  year      = {2017},
  language  = {de}
}
@book{ToprakWeitzel2017,
  author    = {Toprak, Ahmet and Weitzel, Gerrit},
  title     = {Deutschland das Einwanderungsland},
  publisher = {Springer},
  address   = {Wiesbaden},
  isbn      = {978-3-658-15911-5},
  pages     = {38},
  year      = {2017},
  language  = {de}
}