The Great War. Book call no. A History of Modern Germany, 1840-1945. New York, Knopf, 1969. 818 p. Schlieffen Plan, pp 344-348.
Book call no.
From the Eighteenth Century to the Present Day. Bloomington, Indiana University Press, 1975. K62m Liddell Hart, Basil H . New York, Praeger, 1974. 426 p. Strategy of the First World War, pp 151-163.