@book{2014itabashiainugonihongokeiseikateikaimei,
  title = {Ainugo, Nihongo no keisei katei no kaimei ni mukete no kenkyū},
  author = {Yoshizō Itabashi},
  year = {2014},
  language = {ain},
  url = {https://openlibrary.org/works/OL23287874W}
}