Hardy, D. (1977). Petr Tkachev, the critic as Jacobin. University of Washington.
Tohutoru Kātū Chicago (17th ed.)Hardy, Deborah. Petr Tkachev, the Critic as Jacobin. London: University of Washington, 1977.
Tohutoro MLA (9th ed.)Hardy, Deborah. Petr Tkachev, the Critic as Jacobin. University of Washington, 1977.
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