Powell, E. A. (1928). Embattled borders: Eastern Europe from the Balkans to the Baltic. The Century Co.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPowell, Edward Alexander. Embattled Borders: Eastern Europe from the Balkans to the Baltic. New York: The Century Co, 1928.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPowell, Edward Alexander. Embattled Borders: Eastern Europe from the Balkans to the Baltic. The Century Co, 1928.
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