@book{Werling1989,
  author    = {Michael Werling},
  title     = {Die Zisterzienserabtei Otterberg},
  url       = {https://nbn-resolving.org/urn:nbn:de:hbz:832-epub4-9270},
  pages     = {36},
  year      = {1989},
  language  = {de}
}