APA (7 वां संस्करण) प्रशस्ति पत्र
Alston, C. (2007). Russia's greatest enemy?: Harold Williams and the Russian revolutions. Tauris Academic Studies ; In the U.S. and Canada distributed by Palgrave Macmillan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Alston, Charlotte. Russia's Greatest Enemy?: Harold Williams and the Russian Revolutions. London ; New York : New York: Tauris Academic Studies ; In the U.S. and Canada distributed by Palgrave Macmillan, 2007.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Alston, Charlotte. Russia's Greatest Enemy?: Harold Williams and the Russian Revolutions. Tauris Academic Studies ; In the U.S. and Canada distributed by Palgrave Macmillan, 2007.
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