APA (7th ed.) Citation

Trevelyan, G. M., & Dunham, W. H. (1959). A shortened history of England. Penguin Books.

Chicago Style (17th ed.) Citation

Trevelyan, George Macaulay, and William Huse Dunham. A Shortened History of England. [Harmondsworth, Middlesex, Eng.]: Penguin Books, 1959.

MLA (9th ed.) Citation

Trevelyan, George Macaulay, and William Huse Dunham. A Shortened History of England. Penguin Books, 1959.