APA Style

Christakis, N, A., Fowler, J, H. (2009). Connected: The Surprising Power of Our Social Networks and How They Shape Our Lives . New York: Little, Brown, and Company.

MLA Style

Christakis, Nicholas, A.., Fowler, James, H.. "Connected: The Surprising Power of Our Social Networks and How They Shape Our Lives". New York: Little, Brown, and Company, 2009. Books.