Strengths-Based Leadership by Gallup Press/Tom Rath

The Dictator’s Handbook by Bruce Bueno de Mesquita and Alastair Smith 

What Happens When Authoritarians Inherit the Earth? A Simulation by Bob Altemeyer 
Analyses of Social Issues and Public Policy, Vol. 3, No. 1, 2003

The Gulag Archipelago by Aleksandr I. Solzhenitsyn