Dreikurs, Rudolf, 1897-1972. Maintaining sanity in the classroom : illustrated teaching techniques / Rudolf Dreikurs, Bernice Bronia Grunwald and Floy C. Pepper. - New York : Harper & Row, 1971. - xii, 338 p. ; 24 cm. Includes bibliographies. ISBN: 0060417587 Subjects--Topical Terms: Educational psychology.Motivation in education.