Influence: The Psychology of PersuasionAuthor: Robert B. Cialdini Condition: Good Paperback 320 pages This business and psychology book is among the most important books written in the last ten years. This book on persuasion explains the psychology of why people say yes and how to apply these understandings. Learn about the six universal principles, how to use them to become a skilled persuader and how to defend yourself against them. Perfect for people in all walks of life, the principles