Singer, Scott R. How to hit a curveball : confront and overcome the unexpected in business / Scott R. Singer ; with Mark Levine. - New York : Portfolio, 2010. - xi, 221 p. : ill. ; 24 cm. Includes index. ISBN: 9781591843108 (hbk.) RM94.95 1591843103 (hbk.) Subjects--Topical Terms: Management--Psychological aspects.Change (Psychology)Organizational change.