Kennan, George F., 1904-, author
An Atlantic Monthly Press Book, 1961
Buku Teks
Carr, Edward Hallet, author
Macmillan, 1954
Buku Teks
Galeotti, Mark, author
St. Martins Press, 1997
Buku Teks
Kowalski, Ronald
Routledge, 1997
Buku Teks
Daniels, Robert V
Westview Press, 1988
Buku Teks