@Book{sitereport_31991,
 author = "吉田, 直哉",
 title = "古宿遺跡",
 volume = "",
 publisher = "山武郡市文化財センター and 正朋会",
 year = 1999,
 series = "山武郡市文化財センター発掘調査報告書",
 number = "60",
 url = https://sitereports.nabunken.go.jp/31991,
 }