APA (7th ed.) Citation

Palmer, A. (1981). The Penguin dictionary of modern history: 1789 - 1945 (repr.). Penguin Books.

Chicago Style (17th ed.) Citation

Palmer, Alan. The Penguin Dictionary of Modern History: 1789 - 1945. repr. Harmondsworth [u.a.]: Penguin Books, 1981.

MLA (9th ed.) Citation

Palmer, Alan. The Penguin Dictionary of Modern History: 1789 - 1945. repr. Penguin Books, 1981.