[1] 上代特殊仮名遣 - Wikipedia (2017-01-08 20:42:07 +09:00) <https://ja.wikipedia.org/wiki/%E4%B8%8A%E4%BB%A3%E7%89%B9%E6%AE%8A%E4%BB%AE%E5%90%8D%E9%81%A3>