Kennan, George F., 1904-
An Atlantic Monthly Press Book, 1961
Buku Teks
Zetkin, Klara
Foreign Languages Publishing House, 1956
Buku Teks
Westview Press, 1991
Buku Teks
Lewin, Mostie
University of California Press , 1988
Buku Teks
Stephan, John J.
Stanford University Press, 1994
Buku Teks