@Book{sitereport_33410,
 author = "小柳, 和宏",
 title = "大分の中世城館",
 volume = "4",
 publisher = "大分県教育委員会",
 year = 2004,
 series = "大分県文化財調査報告書",
 number = "170",
 url = https://sitereports.nabunken.go.jp/33410,
 }