GallWey, Timothy. The inner game of tennis : the ultimate guide to the mental side of peak performance / by Timothy Gallwey. - London : Pan Macmillan, 2015. - xviii, 134 p. : ill. ; 20 cm Includes bibliographical references and index. ISBN: 9781447288503 Subjects--Topical Terms: Tennis--Psychological aspects. Dewey Class. No.: 128.2 / GAL/T