@book{2010xbronisawpisudskisendeavoursonainueducation,
  title = {Bronisław Piłsudski's endeavours on Ainu education and self-government},
  author = {紘一 井上},
  year = {2010},
  language = {ain},
  url = {https://ci.nii.ac.jp/ncid/BB02853752}
}