@Book{sitereport_70088,
 author = "秋山, 隆雄",
 title = "祇園城跡　",
 volume = "1",
 publisher = "小山市教育委員会",
 year = 2002,
 series = "小山市文化財調査報告書",
 number = "55",
 url = https://sitereports.nabunken.go.jp/70088,
 }