@Book{sitereport_91974,
 author = "余市町, ",
 title = "史跡フゴッペ洞窟保存工事報告",
 volume = "",
 publisher = "北海道余市郡余市町 and 績文堂出版",
 year = 1973,
 series = "",
 number = "",
 url = https://sitereports.nabunken.go.jp/91974,
 }