APA (7th ed.) Citation

PALMER, A. (1962). A dictionary modern history 1789-1945. Penguin books.

Chicago Style (17th ed.) Citation

PALMER, A.W. A Dictionary Modern History 1789-1945. England: Penguin books, 1962.

MLA (9th ed.) Citation

PALMER, A.W. A Dictionary Modern History 1789-1945. Penguin books, 1962.