Thimann, C., & Koch, M. (1997). From Generosity to Sustainability: The Austrian Pension System and Options for its Reform. International Monetary Fund.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रThimann, Christian, और Manfred Koch. From Generosity to Sustainability: The Austrian Pension System and Options for Its Reform. Washington, D.C.: International Monetary Fund, 1997.
एमएलए (8वां संस्करण) प्रशस्ति पत्रThimann, Christian, और Manfred Koch. From Generosity to Sustainability: The Austrian Pension System and Options for Its Reform. International Monetary Fund, 1997.
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