Skinner & Stacke 1922, pp. 8–10. Skinner, H. T.; Stacke, H. Fitz M. (1922). Principal Events 1914–1918. History of the Great War Based on Official Documents by Direction of the Historical Section of the Committee of Imperial Defence. London: HMSO. OCLC17673086. Retrieved 7 February 2014.
Edmonds 1926, pp. 48, 452–456. Edmonds, J. E. (1926). Military Operations France and Belgium, 1914: Mons, the Retreat to the Seine, the Marne and the Aisne August–October 1914. History of the Great War Based on Official Documents by Direction of the Historical Section of the Committee of Imperial Defence. Vol. I (2nd ed.). London: Macmillan. OCLC58962523.
Skinner & Stacke 1922, pp. 8–10. Skinner, H. T.; Stacke, H. Fitz M. (1922). Principal Events 1914–1918. History of the Great War Based on Official Documents by Direction of the Historical Section of the Committee of Imperial Defence. London: HMSO. OCLC17673086. Retrieved 7 February 2014.
