@Book{sitereport_108799,
 author = "国土交通省関東地方整備局東京湾口航路事務所, ",
 title = "富津第二海堡跡",
 volume = "",
 publisher = "国土交通省関東地方整備局東京湾口航路事務所",
 year = 2014,
 series = "",
 number = "",
 url = https://sitereports.nabunken.go.jp/108799,
 }