"Politics Resources". Election 1992. Politics Resources. 9 April 1992. Archived from the original on 24 July 2011. Retrieved 6 December 2010.
ukwhoswho.com
‘FERGUSON, Brig.-Gen. Algernon Francis Holford’, Who Was Who, A & C Black, an imprint of Bloomsbury Publishing plc, 1920–2016; online edn, Oxford University Press, 2014 ; online edn, April 2014 accessed 18 Sept 2017