Shaffer, H. G. e., & Shaffer, H. G. (1984). Soviet system in theory and practice: Western and Soviet views. Frederick Ungar.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रShaffer, Harry G. ed, और Harry G. Shaffer. Soviet System in Theory and Practice: Western and Soviet Views. Frederick Ungar, 1984.
एमएलए (9वां संस्करण) प्रशस्ति पत्रShaffer, Harry G. ed, और Harry G. Shaffer. Soviet System in Theory and Practice: Western and Soviet Views. Frederick Ungar, 1984.
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