V Congresso do Partido Operário Social-Democrata Russo (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "V Congresso do Partido Operário Social-Democrata Russo" in Portuguese language version.

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6^th place

803^rd place

252^nd place

books.google.com

Thatcher, Ian D. Trotsky. Routledge Historical Biographies. Londres: Routledge, 2003. p. 49
Souvarine, Boris. Stalin: a Critical Survey of Bolshevism. Gardners Books, 2007. p. 107
Service, Robert. Stalin: A Biography. Cambridge, Massachusetts: Belknap Press of Harvard University Press, 2005. p. 65