Whitman, David. The optimism gap : the I'm ok--they're not syndrome and the myth of American decline / David Whitman ; foreword by Christopher Jencks. - New York : Walker and Co., c1998. - xviii, 190 p. ; 22 cm. ISBN: 0802713343 (alk. paper) LCCN: 98015694 LC Class. No.: HN90.P8 .W45 1998 / W45 1998 Dewey Class. No.: 303.3/8/0973