@Book{sitereport_100697,
 author = "賀川 光夫, ",
 title = "七双子古墳群",
 volume = "",
 publisher = "大分県教育庁管理部文化課",
 year = 1962,
 series = "大分県文化財調査報告書",
 number = "8",
 url = https://sitereports.nabunken.go.jp/100697,
 }