Fitzsimons 1969, tr. 2367–2368 Fitzsimons, Bernard (1969). The Illustrated Encyclopaedia of 20th Century Weapons and Warfare, Volume 22. New York: Columbia House. OCLC177305886.
Coulter 1954, tr. 331 Coulter, J.L.S. (1954). The Royal Naval Medical Service, Volume II: Operations, History of the Second World War. London: HMSO. OCLC59027794.