Cita APA (7a ed.)

Peterson, P. E., & Jencks, C. (1991). The urban underclass. Brookings Institution.

Cita Chicago Style (17a ed.)

Peterson, Paul E., y Christopher Jencks. The Urban Underclass. Washington: Brookings Institution, 1991.

Cita MLA (9a ed.)

Peterson, Paul E., y Christopher Jencks. The Urban Underclass. Brookings Institution, 1991.