Hoffer, Eric. The true believer thoughts on the nature of mass movements. - [1st ed.] - New York Harper [1951] - xiii, 176 p. 20 cm. LCCN: 51001405 Subjects--Topical Terms: Social groupsFanaticism.Social psychology LC Class. No.: HM281 / .H6 Dewey Class. No.: 301.1582