Clarke, G. R. G., habyarimana, j., ingram, m., kalpan, d., & ramachandran, v. (2007). An assessment of the investment climate in South Africa. World Bank.
Παραπομπή σε μορφή Chicago (17η εκδ.)Clarke, George R. G., james habyarimana, mochael ingram, david kalpan, και vijaya ramachandran. An Assessment of the Investment Climate in South Africa. Washington, DC: World Bank, 2007.
Παραπομπή σε μορφή MLA (9th εκδ.)Clarke, George R. G., et al. An Assessment of the Investment Climate in South Africa. World Bank, 2007.