@book{2007yoshinariainuryukyushi,
  title = {声とかたちのアイヌ・琉球史},
  author = {吉成 直樹},
  year = {2007},
  language = {ain},
  url = {https://ndlsearch.ndl.go.jp/books/R100000002-I000008832988}
}