Sweezy, Paul M. (Paul Marlor), 1910-2004
Socialism
McGraw-Hill, 1949
 Buku Teks
Collins, James
A history of modern European philosophy
The Bruce Publishing Company, 1954
 Buku Teks
Agrarian condition in modern European history
edited by Charles K. Warner
Macmillan, 1966
 Buku Teks
Agrarian conditions in modern European history
edited by Charles K. Warner
Macmillan, 1966
 Buku Teks
Welch, David
Modern European history 1871-1975: a documentary reader
Heinemann, 1994
 Buku Teks