Castro, Americo
Princeton University Press, 1954
Buku Teks
Hiroshi, Watanabe, author
I-House Press, 2012
Buku Teks
Trotsky, Leon
The University of Michigan Press, 1932
Buku Teks
Concina, Ennio
Cambridge, 1998
Buku Teks
Berenger, Jean
[place of publication not identified]: Longman [publisher not identified],
Buku Teks