Rohwer, Jürgen; Hümmelchen, Gerhard (2007). «Seekrieg 1945, April» [Naval War 1945, April]. Chronik des Seekrieges 1939–1945 (em alemão). Württembergische Landesbibliothek Stuttgart. Consultado em 12 de julho de 2021
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Roskill 1960, pp. 57–58. Roskill, S.W. (1960). The War at Sea 1939–1945. Volume III: The Offensive Part I. London: Her Majesty's Stationery Office. OCLC58588186
Roskill 1960, p. 58. Roskill, S.W. (1960). The War at Sea 1939–1945. Volume III: The Offensive Part I. London: Her Majesty's Stationery Office. OCLC58588186
Roskill 1960, pp. 58, 72. Roskill, S.W. (1960). The War at Sea 1939–1945. Volume III: The Offensive Part I. London: Her Majesty's Stationery Office. OCLC58588186
Roskill 1960, p. 69. Roskill, S.W. (1960). The War at Sea 1939–1945. Volume III: The Offensive Part I. London: Her Majesty's Stationery Office. OCLC58588186
Roskill 1960, p. 102. Roskill, S.W. (1960). The War at Sea 1939–1945. Volume III: The Offensive Part I. London: Her Majesty's Stationery Office. OCLC58588186