Halpern, David Inside the nudge unit : how small changes can make a big difference / David Halpern, with Owain Service and the Behavioural Insights Team, Foreword by Richard Thaler - London : WH Allen, 2015. - xiv, 383 pages : Includes index ISBN: 9780753556535 Subjects--Topical Terms: Psychology LC Class. No.: BF 575.P9 HAL 2015