Freund, H. A.
1945, Angus and Robertson
Buku Teks
Clark, Alan
A Signet Book, 1966
Buku Teks
Kennan, George F., 1904-, author
An Atlantic Monthly Press Book, 1961
Buku Teks
Oxford University Press, 1951
Buku Teks
Werth, Alexander
Hill and Wang, 1961
Buku Teks