@Book{sitereport_30983,
 author = "岡田, 光広",
 title = "関宿城跡",
 volume = "2",
 publisher = "千葉県文化財センター",
 year = 1988,
 series = "千葉県文化財センター調査報告",
 number = "141",
 url = https://sitereports.nabunken.go.jp/30983,
 }