著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
"Köhl, Fritz and Rössler, Eberhard",The type XXI U-boat,,Naval Institute Press,1991,Anatomy of the ship,,9781557508294,,https://cir.nii.ac.jp/crid/1130000795966218880