Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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