Keylor, William R., 1944-
The twentieth-century world : an international history
Oxford University Press, 1996
 Buku Teks
Readings in twentieth-century European history
edited by Alexander Baltzly, A. William Salomone
Appleton-Century-Crofts, 1950
 Buku Teks
Palmer, Alan
The penguin dictionary of twentieth-century history 1900-1982
Penguin Books , 1987
 Buku Referensi
Gilbert, Martin
A history of the twentieth century,volume one:1900-1933
Avon books, 1997
 Buku Teks
Richards, Michael D
Twentieth-century Europe : a brief history, 1900 to the present
John Wiley &​ Sons, 2014
 Buku Teks