Barr, N. A. (2002). The pension puzzle: Prerequisites and policy choices in pension design. International Monetary Fund.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBarr, N. A. The Pension Puzzle: Prerequisites and Policy Choices in Pension Design. Washington, D.C: International Monetary Fund, 2002.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBarr, N. A. The Pension Puzzle: Prerequisites and Policy Choices in Pension Design. International Monetary Fund, 2002.
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