(1991). Five Years That Shook The World Gorbachev's Unfinished Revolution Edited By Harley D Balzer. Wwestview Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFive Years That Shook The World Gorbachev's Unfinished Revolution Edited By Harley D Balzer. Wwestview Press, 1991.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFive Years That Shook The World Gorbachev's Unfinished Revolution Edited By Harley D Balzer. Wwestview Press, 1991.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.