Robinson 2010, pp. 86–87. Robinson, H. (2010). "Remembering War in the Midst of Conflict: First World War Commemorations in the Northern Irish Troubles". 20th Century British History. XXI (1): 80–101. doi:10.1093/tcbh/hwp047. ISSN1477-4674.
On the French historiography see Bloody Victory: The Sacrifice on the Somme and the Making of the Twentieth Century, William Philpott (2009) and Greenhalgh, Elizabeth (July 2003). "Flames over the Somme: A Retort to William Philpott". War in History. 10 (3): 335–342. doi:10.1191/0968344503wh281oa. ISSN1477-0385. S2CID159609046.
On the French historiography see Bloody Victory: The Sacrifice on the Somme and the Making of the Twentieth Century, William Philpott (2009) and Greenhalgh, Elizabeth (July 2003). "Flames over the Somme: A Retort to William Philpott". War in History. 10 (3): 335–342. doi:10.1191/0968344503wh281oa. ISSN1477-0385. S2CID159609046.
Wendt 1931, p. 246; Harris 2009, pp. 271; Philpott 2009, pp. 602–603. Wendt, H. L. (1931). Verdun 1916 Die Angriffe Falkenhayns im Maasgebiet mit Richtung auf Verdun als strategisches Problem [Verdun 1916 The attacks by Falkenhayn in the Meuse area towards Verdun as a strategic question] (in German). Berlin: Mittler. OCLC503838028. Harris, J. P. (2009) [2008]. Douglas Haig and the First World War (repr. ed.). Cambridge: CUP. ISBN978-0-521-89802-7. Philpott, W. (2009). Bloody Victory: The Sacrifice on the Somme and the Making of the Twentieth Century. London: Little, Brown. ISBN978-1-4087-0108-9.
Boraston 1920, p. 64. Boraston, J. H. (1920) [1919]. Sir Douglas Haig's Despatches (repr. ed.). London: Dent. OCLC633614212.
Wendt 1931, p. 246. Wendt, H. L. (1931). Verdun 1916 Die Angriffe Falkenhayns im Maasgebiet mit Richtung auf Verdun als strategisches Problem [Verdun 1916 The attacks by Falkenhayn in the Meuse area towards Verdun as a strategic question] (in German). Berlin: Mittler. OCLC503838028.
Churchill 1938, pp. 1, 427, 1, 004. Churchill, W. S. (1938). The World Crisis. London: Odhams. OCLC4945014.
Robinson 2010, pp. 86–87. Robinson, H. (2010). "Remembering War in the Midst of Conflict: First World War Commemorations in the Northern Irish Troubles". 20th Century British History. XXI (1): 80–101. doi:10.1093/tcbh/hwp047. ISSN1477-4674.
On the French historiography see Bloody Victory: The Sacrifice on the Somme and the Making of the Twentieth Century, William Philpott (2009) and Greenhalgh, Elizabeth (July 2003). "Flames over the Somme: A Retort to William Philpott". War in History. 10 (3): 335–342. doi:10.1191/0968344503wh281oa. ISSN1477-0385. S2CID159609046.