@Book{sitereport_96849,
 author = "牛久市教育委員会, ",
 title = "市指定史跡小坂城跡",
 volume = "",
 publisher = "牛久市教育委員会",
 year = 2012,
 series = "",
 number = "",
 url = https://sitereports.nabunken.go.jp/96849,
 }