Clarke, G. R. G., habyarimana, j., ingram, m., kalpan, d., & ramachandran, v. (2007). An assessment of the investment climate in South Africa. World Bank.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रClarke, George R. G., james habyarimana, mochael ingram, david kalpan, और vijaya ramachandran. An Assessment of the Investment Climate in South Africa. Washington, DC: World Bank, 2007.
एमएलए (9वां संस्करण) प्रशस्ति पत्रClarke, George R. G., et al. An Assessment of the Investment Climate in South Africa. World Bank, 2007.
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