APA-viite (7. p.)

Barr, N. A. (2002). The pension puzzle: Prerequisites and policy choices in pension design. International Monetary Fund.

Chicago-viite (17. p.)

Barr, N. A. The Pension Puzzle: Prerequisites and Policy Choices in Pension Design. Washington, D.C: International Monetary Fund, 2002.

MLA-viite (9. p.)

Barr, N. A. The Pension Puzzle: Prerequisites and Policy Choices in Pension Design. International Monetary Fund, 2002.