Li, Charlene. Groundswell : winning in a world transformed by social technologies / - Expanded and rev. ed. - Boston, Mass. : Harvard Business Review Press, c2011. - xv, 332 p. : ill. ; 21 cm. ISBN: 9781422161982 (pbk.) Subjects--Topical Terms: Online social networksInformation society Dewey Class. No.: 303 HAR 2011 A116 Or.