Ruef, Martin. The entrepreneurial group : social identities, relations, and collective action / Martin Ruef. - Princeton : Princeton University Press, c2010. - xviii, 288 p. : ill. ; 25 cm. Includes bibliographical references and index. ISBN: 9780691138091 (hbk.) LCCN: 2009047958 Subjects--Topical Terms: Businesspeople.Entrepreneurship.Industrial sociology. LC Class. No.: HB615 / .R84 2010 Dewey Class. No.: 306.34 / RUE