Keith (2010), p. 199.
Keith Neilson; Greg Kennedy, eds. (2010). The British Way in Warfare: Power and the International System, 1856–1956 : Essays in Honour of David French (بالإنجليزية). Farnham: Ashgate Publishing Ltd. ISBN:978-0-75466-593-9. OCLC:647926262. OL:24408282M. QID:Q124515862.
Keith (2010), p. 199.
Keith Neilson; Greg Kennedy, eds. (2010). The British Way in Warfare: Power and the International System, 1856–1956 : Essays in Honour of David French (بالإنجليزية). Farnham: Ashgate Publishing Ltd. ISBN:978-0-75466-593-9. OCLC:647926262. OL:24408282M. QID:Q124515862.
Knickerbocker (1941), p. 148.
Hubert Renfro Knickerbocker (1941), Is Tomorrow Hitler's?: 200 Questions On the Battle of Mankind (بالإنجليزية), New York City: Reynal & Hitchcock, OCLC:1246282, QID:Q124541220
Keith (2010), p. 199.
Keith Neilson; Greg Kennedy, eds. (2010). The British Way in Warfare: Power and the International System, 1856–1956 : Essays in Honour of David French (بالإنجليزية). Farnham: Ashgate Publishing Ltd. ISBN:978-0-75466-593-9. OCLC:647926262. OL:24408282M. QID:Q124515862.
Knickerbocker (1941), p. 148.
Hubert Renfro Knickerbocker (1941), Is Tomorrow Hitler's?: 200 Questions On the Battle of Mankind (بالإنجليزية), New York City: Reynal & Hitchcock, OCLC:1246282, QID:Q124541220