@book{9783896933195,
  title = {Linguistische Theorien der Moderne},
  author = {Gerhard Helbig},
  editor = {Hans G Roloff},
  publisher = {Frank \& Timme},
  year = {1970},
  edition = {1},
  series = {Germanistische Lehrbuchsammlung},
  volume = {19},
  url = {https://www.frank-timme.de/en/programme/product/linguistische\_theorien\_der\_moderne}
}