Trotsky, Leon
The University of Michigan Press, 1932
Buku Teks
Wade, Rex A, author
Cambridge University Press, 2017
Buku Teks
Smele, Jon, author
Oxford University Press, 2016
eBooks
Pasternak, Boris, author
Vintage Classic, 2011
Buku Teks
Pasternak, Boris L.
Everyman's Library, 1991
Buku Teks