MLA

Howe, Jeff. Crowdsourcing : Why the Power of the Crowd Is Driving the Future of Business. New York: Three Rivers Press, 2009.

APA

Howe, J. (2009). Crowdsourcing : why the power of the crowd is driving the future of business. New York: Three Rivers Press.

Chicago

Howe, Jeff Crowdsourcing: Why the Power of the Crowd Is Driving the Future of Business. New York: Three Rivers Press, 2009.