Seligman, Martin E. P. Helplessness : On depression, development, and death / Martin E. P. Seligman. - San Francisco : W. H. Freeman and Co., 1975. - xv, 250 p. ; 24 cm. - A Series of books in psychology . Includes indexes. Bibliography: p. 206-235. ISBN: 0716707527 0716707519 (pbk.) Subjects--Topical Terms: Helplessness (Psychology)Depression, Mental.