@Book{sitereport_106099,
 author = "群馬県地域創生部文化財保護課, ",
 title = "史跡観音山古墳　子ども向け",
 volume = "",
 publisher = "群馬県地域創生部文化財保護課",
 year = 2021,
 series = "",
 number = "",
 url = https://sitereports.nabunken.go.jp/106099,
 }