Originally published in one vol. (B67-22144), London: Hodder & Stoughton, 1967.
A history of the world in the twentieth century, by D. C. Watt, Frank Spencer and Neville Brown. Part 2, 1918-1945 by Donald Cameron Watt. ISBN 0330024671. Published by Pan in 1970. Publication and catalogue information, links to buy online and reader comments.