Παραπομπή σε μορφή APA (7η εκδ.)

Wolff, E. N. (2011). The transformation of the American pension system: Was it beneficial for workers? W.E. Upjohn Institute for Employment Research.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Wolff, Edward N. The Transformation of the American Pension System: Was It Beneficial for Workers? Kalamazoo, Mich.: W.E. Upjohn Institute for Employment Research, 2011.

Παραπομπή σε μορφή MLA (9th εκδ.)

Wolff, Edward N. The Transformation of the American Pension System: Was It Beneficial for Workers? W.E. Upjohn Institute for Employment Research, 2011.