Emmot, Bill
20:21 vision: the lessons of the 20th century for the 21st
Allen Lane, 2003
 Buku Teks
The 20th century in cartoons a history in pictures
edited by Tony Husband
Arcturus Publ, 2014
 Buku Teks SO
Brown, Neville
A History of the world 20th century, part 3: 1945-1968
Pan Books, 1970
 Buku Teks
Watt, D.C.
A History of the world in the 20th century; Part 1: 1899-1918
Pan Books, 1967
 Buku Teks
Spencer, Frank
A History of the world in the 20th century, part 2: 1918-1945
Pan Books, 1967
 Buku Teks