Riasanovsky, Nicholas V., author
Oxford University Press, 1963
Buku Teks
translated by George H. Hanna
Foreign Languages Publishing House, 1960
Buku Teks
Smele, Jon, author
Oxford University Press, 2016
eBooks
Andrew, Christopher, author
Basic Books, 2001
Buku Teks
Trotsky, Leon
The University of Michigan Press, 1932
Buku Teks