1980s •
Imperial Diplomacy: Rosebery and the Failure of Foreign Policy. Mansell Publishing, 1986. •
The Origins of the First World War. Longman, 1987. (Seminar Studies In History)
1990s •
Modern Germany Reconsidered: 1870-1945.
Routledge, 1992. (Editor) •
American Foreign Relations Reconsidered: 1890-1993. Routledge, 1994. (Editor) •
Origins of the Second World War Reconsidered: A.J.P. Taylor and the Historians. Routledge, 1999. (Editor)
2000s •
The Times and Appeasement: The Journals of A. L. Kennedy, 1932-1939.
Cambridge University Press, 2001. (Camden Fifth Series) •
The World War Two Reader. Routledge, 2004. (Editor) (
Routledge Readers in History) •
A Companion to Europe 1900-1945. Wiley-Blackwell, 2005. (Editor) (Blackwell Companions to European History) •
The Origins of the First World War. Routledge, 2006. (With James Joll) (Origins Of Modern Wars) •
A Companion to International History 1900-2001. Wiley-Blackwell, 2007. (Editor) (Blackwell Companions to History) •
The Encyclopedia of War. Wiley-Blackwell, 2012. (Editor) •
The Month that Changed the World: July 1914. 2014. •
Twentieth-Century War and Conflict: A Concise Encyclopedia. Wiley-Blackwell, 2014. (Editor) == References ==