@misc{upopoyainulanguagesignagedictionary,
  title = {ウポポイのアイヌ語表示辞典 (Upopoy Ainu-language signage dictionary)},
  year = {2025},
  language = {ain},
  note = {北海道（沙流・十勝・石狩など複数方言）},
  howpublished = {https://nam.go.jp/wp/wp-content/uploads/2025/04/5c5e1f24922be5ef27295ed7cbba5e48.pdf}
}