@Book{sitereport_115499,
 author = "土屋, 長久",
 title = "三塚",
 volume = "",
 publisher = "佐久市教育委員会",
 year = 1975,
 series = "郷土の文化財",
 number = "9",
 url = https://sitereports.nabunken.go.jp/115499,
 }