Morison 1956, p. 261. Morison, Samuel Eliot (1956). The Atlantic Battle Won: May 1943 – May 1945. History of United States Naval operations in World War II. Vol. X. Boston: Little, Brown and Company Inc. OCLC1018166599.
Hague 2000, p. 173; Morison 1956, p. 261. Hague, Arnold (2000). The Allied Convoy System 1939–1945: Its Organisation, Defence and Operation. London: Chatham. ISBN1-86176-147-3. Morison, Samuel Eliot (1956). The Atlantic Battle Won: May 1943 – May 1945. History of United States Naval operations in World War II. Vol. X. Boston: Little, Brown and Company Inc. OCLC1018166599.
Morison 1956, pp. 261–262. Morison, Samuel Eliot (1956). The Atlantic Battle Won: May 1943 – May 1945. History of United States Naval operations in World War II. Vol. X. Boston: Little, Brown and Company Inc. OCLC1018166599.
Morison 1956, p. 262. Morison, Samuel Eliot (1956). The Atlantic Battle Won: May 1943 – May 1945. History of United States Naval operations in World War II. Vol. X. Boston: Little, Brown and Company Inc. OCLC1018166599.
Morison 1956, p. 263. Morison, Samuel Eliot (1956). The Atlantic Battle Won: May 1943 – May 1945. History of United States Naval operations in World War II. Vol. X. Boston: Little, Brown and Company Inc. OCLC1018166599.
Morison 1956, pp. 263–264. Morison, Samuel Eliot (1956). The Atlantic Battle Won: May 1943 – May 1945. History of United States Naval operations in World War II. Vol. X. Boston: Little, Brown and Company Inc. OCLC1018166599.
Morison 1956, p. -264. Morison, Samuel Eliot (1956). The Atlantic Battle Won: May 1943 – May 1945. History of United States Naval operations in World War II. Vol. X. Boston: Little, Brown and Company Inc. OCLC1018166599.