@Book{sitereport_36253,
 author = "田原, 良信",
 title = "特別史跡五稜郭跡",
 volume = "2",
 publisher = "函館市教育委員会",
 year = 1987,
 series = "",
 number = "",
 url = https://sitereports.nabunken.go.jp/36253,
 }