APA (7th ed.) Citation

Christakis, N., & Fowler, J. (2009). Connected. Harper Press.

Chicago Style (17th ed.) Citation

Christakis, Nicholas, and James Fowler. Connected. London: Harper Press, 2009.

MLA (9th ed.) Citation

Christakis, Nicholas, and James Fowler. Connected. Harper Press, 2009.

Warning: These citations may not always be 100% accurate.