1. Aldrich, Richard J., GCHQ. The Uncensored Story of Britain's Most Secret Intelligence Agancy (London, 2011).
2. Aldrich, Richard J., The Hidden Hand. Britain, America and Cold War Secret Intelligence (London, 2001).
3. Andrew, Cristopher, "Intelligence in the Cold War", v: The Cambridge History of the Cold War. Vol. II, Crises and Détente, ur. Melvyn P. Leffler in Odd Arne Westad (Cambridge, 2011), str. 417–437.
4. Alexander, Stella, Church and State in Yugoslavia since 1945 (Cambridge, 1979).
5. Bajc, Gorazd, Iz nevidnega na plan. Slovenski primorski liberalni narodnjaki v emigraciji med drugo svetovno vojno in ozadje britanskih misij v Sloveniji (Koper, 2002).