@Book{sitereport_42911, author = "大島, 慎一", title = "史跡小田原城跡二の丸中堀", volume = "1", publisher = "小田原市教育委員会", year = 1993, series = "小田原市文化財調査報告書", number = "45", url = https://sitereports.nabunken.go.jp/42911, }