Brian P. Farrell, 2005, The Defence and Fall of Singapore 1940-1942, Ch. 7, n.19 Farrell states: "The paper trail in archival records is PRO, WO172/18, Malaya Command War Diary Appendix Z.1, 10 December 1941; WO172/33, III Indian Corps War Diary, 12, 19, 23–24 December 1941;CAB106/53, 11th Indian Division history, ch. 4; CAB106/86, Maltby Despatch; IWM, Wild Papers, 66/227/1, Wild notes." (Access date: March 6, 2007.)