Gaya APA

Christakis, N, A, &, F, J, H. (2011). Connected: The surprising power of our social networks and how they shape our lives - how your friends' friends' friends affect everything you feel, think, and do. . New York: New York Back Bay Books.

Gaya MLA

Christakis, Nicholas, A., &, Fowler,, James, H.. "Connected: The surprising power of our social networks and how they shape our lives - how your friends' friends' friends affect everything you feel, think, and do. ". New York: New York Back Bay Books, 2011. Buku.