R. J. Overy, War and Economy in the Third Reich (Oxford, 1994), 144-74, 315-42.

D. Reynolds, «Churchill and the British „Decision¹⁴ to Fight on in 1940: Right Policy, Wrong Reasons», in R. Langhorne (ed.), Diplomacy and Intelligence during the Second World War (Cambridge, 1985), 147-67; D. Reynolds, The Creation of the Anglo-American Alliance 1937-41: A Study in Competitive Cooperation (London, 1981), 88-108.