Tovias, A. (1990). The European communities' single market: The challenge of 1992 for Sub-Saharan Africa. World Bank.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTovias, Alfred. The European Communities' Single Market: The Challenge of 1992 for Sub-Saharan Africa. Washington: World Bank, 1990.
एमएलए (9वां संस्करण) प्रशस्ति पत्रTovias, Alfred. The European Communities' Single Market: The Challenge of 1992 for Sub-Saharan Africa. World Bank, 1990.
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