1. The Focused Organization of Social Ties
2. The Strength of Weak Ties
3. Searching for a Mate
4. S. Turkle , Reclaiming Conversation: The Power of Talk in a Digital Age (Penguin Press, New York, NY, 2015).
5. M. J. Rosenfeld , The Age of Independence: Interracial Unions, Same-Sex Unions, and the Changing American Family (Harvard University Press, Cambridge, MA, 2007).