1. ‘t Hart, P. (2014). Understanding Political Leadership. Palgrave.
2. Adonis, A. (2013). 5 Days in May. The Coalition and Beyond. Biteback Publishing.
3. Ashcroft, M., & Oakeshott, I. (2015). Call Me Dave. The Unauthorised Biography of David Cameron. Biteback Publishing.
4. Baker, N. (2015). Against the Grain. Biteback Publishing.
5. BBC. (2012). Leveson Inquiry: 10 key witnesses. 24 July. https://www.bbc.co.uk/news/uk-18899085