tranlated from the Russion by H. Chizhevsky
Progress Publishers, 1977
Buku Teks
Shacford, R.H., author
Public Affairs Press, 1952
Buku Teks
Llewellyn-Jones, Derek
Faber and Faber , 1983
Buku Teks
Lumumba, Patrice, author
Foreign Languages Publishing Hose, 1961.
Buku Teks
Dixon, Patrick
Kingsway , 1994
Buku Teks