APA (7th ed.) Citation

Townson, D. (1994). The new Penguin dictionary of modern history, 1789-1945. Penguin.

Chicago Style (17th ed.) Citation

Townson, Duncan. The New Penguin Dictionary of Modern History, 1789-1945. London, England ; New York, N.Y., USA: Penguin, 1994.

MLA (9th ed.) Citation

Townson, Duncan. The New Penguin Dictionary of Modern History, 1789-1945. Penguin, 1994.