Sorsa, P. (1994). Regional integration and the Baltics: Which way? World Bank.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSorsa, Piritta. Regional Integration and the Baltics: Which Way? Washington, D.C: World Bank, 1994.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSorsa, Piritta. Regional Integration and the Baltics: Which Way? World Bank, 1994.
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