World Bank. Operations Policy Dept & World Bank. Learning and Leadership Center. (1996). Handbook on economic analysis of investment operations. World Bank.
Lua i Stíl Chicago (17ú heag.)World Bank. Operations Policy Dept agus World Bank. Learning and Leadership Center. Handbook on Economic Analysis of Investment Operations. Washington, D. C: World Bank, 1996.
Lua MLA (9ú heag.)World Bank. Operations Policy Dept agus World Bank. Learning and Leadership Center. Handbook on Economic Analysis of Investment Operations. World Bank, 1996.
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