@article{Toennies2009,
  author    = {Ferdinand T{\"o}nnies},
  title     = {Ein R{\"u}ckblick auf den Streik im Ruhrkohlenrevier},
  journal   = {Das Freie Wort},
  volume    = {4},
  pages     = {893 -- 900},
  year      = {2009},
}