@book{1854yodawatsugen,
  title = {南北蝦夷地魯西亜国話通言 (Nanboku Ezochi Roshia kokuwa tsūgen)},
  author = {依田次郎助},
  year = {1854},
  language = {ain},
  url = {https://www3.library.pref.hokkaido.jp/detail/4923}
}