MLA

Li, Charlene, and Josh Bernoff. Groundswell : Winning In a World Transformed by Social Technologies. Boston (Mass.): Harvard Business Press, 2008.

APA

Li, C., & Bernoff, J. (2008). Groundswell : winning in a world transformed by social technologies. Boston (Mass.): Harvard Business Press.

Chicago

Li, Charlene, and Josh Bernoff. Groundswell: Winning In a World Transformed by Social Technologies. Boston (Mass.): Harvard Business Press, 2008.