Wieczynski, J. L. (1985). Trubetskoi, Nikita Yur'evich - Union of Soviet Socialist Republics, Administrative-Territorial Division of. Acad. Int. Press.
Lua i Stíl Chicago (17ú heag.)Wieczynski, Joseph L. Trubetskoi, Nikita Yur'evich - Union of Soviet Socialist Republics, Administrative-Territorial Division of. Gulf Breeze: Acad. Int. Press, 1985.
Lua MLA (8ú heag.)Wieczynski, Joseph L. Trubetskoi, Nikita Yur'evich - Union of Soviet Socialist Republics, Administrative-Territorial Division of. Acad. Int. Press, 1985.
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