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*LAVRIN, Janko. From Pushkin to Mayakovsky. Sylvan Press, London, 1948, pp. 262, 264, 269, 293.
*LAVRIN, Janko. Russian Writers, Their Lives and Literature. D. van Nostrand Co., Toronto-New York- London, 1954, pp. 290, 291, 292, 296, 316.
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*LETTENBAUER, Wilhelm. Klyuyew. Ibid., S. 719.
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*LUTHER, Arthur. Geschichte der Russischen Literatur. Bibliographisches Institut, Leipzig, 1924, IX, SS. 444, 463–464.
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*PATRICK, George Z. Love of Russia in contemporary Peasant Poetry. The Slavonic Review, London, Vol. VII, № 19, June 1928, pp. 85, 86.
*PATRICK, George Z. Popular Poetry in Soviet Russia. University of California Press, Berkeley, 1929.
*POGGIOLI, Renato. The Poets of Russia 1880–1930. Harvard University Press, Cambridge, Mass., 1960, pp. XIV, 27, 235–236, 269–271, 297, 360.
*POZNER, Vladimir. Panorama de la litterature russe contemporaine. Avec une preface de P. Hazard. KRA, Paris, 1929, pp. 231, 289–290.
*PUTNAM, George. Alexander Blok and Russian Intelligentsia. The Slavic and East European Journal, Vol. IX, № 1, 1965, Spring, pp. 33–34, 43.
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*STAMMLER, Heinrich. Klyuew. Ibid., Band II, 2. Auflage, 1961, SS. 54–55.
*STRUVE, Gleb. Soviet Russian Literature. Routledge & Sons, London, 1935, pp. 129, 261.
*STRUVE, Gleb. Ristoire de la litterature sovietique. Editions du Chene, Paris, 1946, p. 147.
*STRUVE, Gleb. Soviet Russian Literature. 1917–1950. University of Oklahoma Press, Norman, 1951, pp. 19f, 22–23, 117.
*STRUVE, Gleb. Geschiche der Sowjetliteratur. Munchen, 1957.
