Buchan, John (1932). The Gap in the Curtain. London: Hodder and Stoughton. p. 162. «A Coalition...only shares the loot, but a national government pools the brains.»
jstor.org
Andrew Thorpe, "Arthur Henderson and the British political crisis of 1931." Historical Journal 31#1 (1988): 117-139. in JSTOR
oxfordscholarship.com
Andrew Thorpe, "The British General Election of 1931" (Oxford UP, 1991) online