@book{1925johnbatchelorthepitdwellersofhokkaidoandainuplacenames,
  title = {The pit-dwellers of Hokkaido and Ainu place-names considered},
  author = {John Batchelor},
  year = {1925},
  language = {ain},
  url = {https://openlibrary.org/works/OL43795893W}
}