Readings:
Fernandez, Roberto and David Harris. (1992). Social Isolation and the Underclass. Pp. 257-293 in Drugs, Crime, and Social Isolation, edited by Adele Harrell and George Peterson: The Urban Institute.
Marsden, Peter, and Jeanne Hurlbert. (1988). Social Resources and Mobility Outcomes. Social Forces 66:1038-1059.