Corbett 1921, p. 302 Corbett, Julian S. (1921). Naval Operations: Vol. II. History of the Great War: Based on Official Documents. London: Longmans, Green and Co.
Corbett 1921, pp. 303–304 Corbett, Julian S. (1921). Naval Operations: Vol. II. History of the Great War: Based on Official Documents. London: Longmans, Green and Co.