Cita APA (7th ed.)
Sullivan, T. A., Warren, E., & Westbrook, J. L. (2000). The fragile middle class: Americans in debt. Yale University Press.
Cita Chicago (17th ed.)
Sullivan, Teresa A., Elizabeth Warren, i Jay Lawrence Westbrook. The Fragile Middle Class: Americans in Debt. New Haven, CT: Yale University Press, 2000.
Cita MLA (9th ed.)
Sullivan, Teresa A., et al. The Fragile Middle Class: Americans in Debt. Yale University Press, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.