1. Adair, J. E. (1993). Effective leadership: How to develop leadership skills. London: Gower.
2. Army, U.S. (2012). Army Doctrine Publication 6-22, Army Leadership. Washington: Department of the Army.
3. Army, U.S. (2015). Multi-source assessment and feedback: Testimonials. http://msaf2.army.mil/Home/Testimonials.aspx .
4. Atkins, S. R. E. (2011). Service complaints commissioner for the armed forces: Annual report 2010. London: Ministry of Defence.
5. Atkins, S. R. E. (2014). Service complaints commissioner for the armed forces: Annual report 2013. London: Ministry of Defence.