World Bank. (2003). World development indicators. International Bank for Reconstruction and Development.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWorld Bank. World Development Indicators. Washington, D.C.: International Bank for Reconstruction and Development, 2003.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWorld Bank. World Development Indicators. International Bank for Reconstruction and Development, 2003.
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