Stubbings, Matthew (October 2016). "British Conservatism and the Indian Revolt: The Annexation of Awadh and the Consequences of Liberal Empire, 1856–1858". Journal of British Studies. 55 (4): 728–749. doi:10.1017/jbr.2016.73. S2CID152098641.
"The Age". Melbourne, Victoria. 13 September 1882. p. 4. Retrieved 28 May 2018.
politicsresources.net
"Politics Resources". Election 1992. Politics Resources. 9 April 1992. Archived from the original on 24 July 2011. Retrieved 6 December 2010.
semanticscholar.org
api.semanticscholar.org
Stubbings, Matthew (October 2016). "British Conservatism and the Indian Revolt: The Annexation of Awadh and the Consequences of Liberal Empire, 1856–1858". Journal of British Studies. 55 (4): 728–749. doi:10.1017/jbr.2016.73. S2CID152098641.
spectator.co.uk
archive.spectator.co.uk
"Postscript". The Spectator. 9 November 1839. p. 9. Retrieved 6 May 2018.
ukwhoswho.com
'LITHGOW, Samuel', 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[permanent dead link]