@Book{sitereport_371,
 author = "佐久市教育委員会, ",
 title = "上久保田向",
 volume = "4",
 publisher = "佐久市教育委員会",
 year = 1994,
 series = "佐久市埋蔵文化財調査報告書",
 number = "25",
 url = https://sitereports.nabunken.go.jp/371,
 }