A set of "Influence: The Psychology of Persuasion" and "Pre-Suasion" by Robert Cialdini. - Title: Influence: The Psychology of Persuasion, Second Edition - Title: Pre-Suasion, Second Edition - Author: Robert Cialdini - Language: Japanese These books show signs of normal use, but are in generally good condition with no writing inside. ◆ Anonymous delivery ◆ Lightly cleaned. ◆ Waterproof packaging for shipping.