Clarke, G. R. G., habyarimana, j., ingram, m., kalpan, d., & ramachandran, v. (2007). An assessment of the investment climate in South Africa. World Bank.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিClarke, George R. G., james habyarimana, mochael ingram, david kalpan, এবং vijaya ramachandran. An Assessment of the Investment Climate in South Africa. Washington, DC: World Bank, 2007.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিClarke, George R. G., et al. An Assessment of the Investment Climate in South Africa. World Bank, 2007.