Kennan, George F., 1904-, author
The University of Chicago Press , 1953
Buku Teks
Kennan, George F., 1904-, author
A Mentor Book, 1951
Buku Teks
Alstyne, Richard W. van
Stanford University Press, 1947
Buku Teks
Kelly, David, author
Hollis & Caster , 1952
Buku Teks
Jones, Howard, author
Franklin Watts, 1985
Buku Teks