Gray, Richard, 1944-
American poetry of the twentieth century
Longman, 1991
Buku Teks
Berkowitz, Gerald M.
American drama of the twentieth century
Longman, 1994
Buku Teks
Pearson, Frederic S.
International relations : the global condition in the late twentieth century
McGraw-Hill, 1992
Buku Teks
Bonner, Thomas Neville
Our recent past : American civilization in the twentieth century
Prentice-Hall, 1963
Buku Teks
Braeman, John
American politics in the twentieth century / John Braeman
Thomas Y Crowill, 1969
Buku Teks