@Book{sitereport_12311,
 author = "桜井, 正広 and 瀬田, 正明 and 石川, 功 and 吉田, 恵二 and 加藤, 晃 and 神戸, 信俊 and 米川, 仁一 and 塩谷, 修",
 title = "茨城県指定史跡土浦城址発掘調査報告書",
 volume = "",
 publisher = "土浦市教育委員会",
 year = 1989,
 series = "",
 number = "",
 url = https://sitereports.nabunken.go.jp/12311,
 }