@Book{sitereport_87730,
 author = "延岡市教育委員会, ",
 title = "延岡城内遺跡",
 volume = "4",
 publisher = "延岡市教育委員会",
 year = 2014,
 series = "延岡市文化財調査報告書",
 number = "52",
 url = https://sitereports.nabunken.go.jp/87730,
 }