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Lua i Stíl Chicago (17ú heag.)Twiss, Thomas M. Trotsky and the Problem of Soviet Bureaucracy. Leiden, Netherlands: Brill, 2014.
Lua MLA (9ú heag.)Twiss, Thomas M. Trotsky and the Problem of Soviet Bureaucracy. Brill, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.