@book{9783732908202,
  title = {Herausforderung Passiv?},
  author = {Sarah Olthoff},
  publisher = {Frank \& Timme},
  year = {2021},
  edition = {1},
  series = {Sprachwissenschaft},
  volume = {54},
  url = {https://www.frank-timme.de/de/programm/produkt/herausforderung\_passiv}
}