Foulkes, Siegmund Heinz. Group psychotherapy : the psychoanalytic approach / S. H. Foulkes and E. J. Anthony. - 2nd ed. - Harmondsworth : Penguin Books, 1973. - 263 p. : ill. ; 18 cm. - A pelican original. . - A pelican original. . ISBN: 0140203702 Subjects--Topical Terms: Group psychotherapy.