Twentieth century Australian literary criticism
edited by Clement Semmler
Oxford University Press, 1967
 Buku Teks
Elkins, William R.
Literary reflections
McGraw-Hill, 1982
 Buku Teks
Woodham, Jonatham M.
Twentieth-Century design
Oxford University Press, 1997
 Buku Teks
Revolutions of the late twentieth century
edited by Jack A. Goldstone, Ted Robert Gurr, Farrokh Moshiri
Westview Press, 1991
 Buku Teks
Black, C.E.
Twentieth Century Europa: a history
Alfred A. Knopf, 1961
 Buku Teks