@article{Freitag2000,
  author    = {Freitag, Thomas},
  title     = {100 Jahre Schreckensgeschichte des deutschen Kinderliedes},
  year      = {2000},
  language  = {de}
}
@book{Freitag2000,
  author    = {Freitag, Thomas},
  title     = {Das Kinderlied : ein alphabetisches Lesebuch},
  publisher = {Lugert},
  address   = {Oldershausen},
  isbn      = {3-89760-138-9},
  pages     = {124 S.},
  year      = {2000},
  language  = {de}
}