@Book{sitereport_18445,
 author = "斎藤, 弘道",
 title = "田宮古墳群",
 volume = "",
 publisher = "財団法人茨城県教育財団",
 year = 1990,
 series = "茨城県教育財団文化財調査報告",
 number = "57",
 url = https://sitereports.nabunken.go.jp/18445,
 }