Harvey Mackay (1996). “Swim with the Sharks Without Being Eaten Alive: Outsell, Outmanage, Outmotivate, & Outnegotiate Your Competition”, Ballantine Books
Hannah Arendt (1972). “Crises of the Republic: Lying in Politics; Civil Disobedience; On Violence; Thoughts on Politics and Revolution”, p.41, Houghton Mifflin Harcourt