Marris, R. L. (1979). A survey and critique of World Bank supported research on international comparisons of real product. World Bank.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMarris, Robin Lapthorn. A Survey and Critique of World Bank Supported Research on International Comparisons of Real Product. Washington, D. C: World Bank, 1979.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMarris, Robin Lapthorn. A Survey and Critique of World Bank Supported Research on International Comparisons of Real Product. World Bank, 1979.
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