@Book{sitereport_70075,
 author = "秋山, 隆雄",
 title = "祇園城跡",
 volume = "3",
 publisher = "小山市教育委員会",
 year = 2006,
 series = "小山市文化財調査報告書",
 number = "67",
 url = https://sitereports.nabunken.go.jp/70075,
 }