APA (7th ed.) Citation

Winbolt, S. E. (1945). Britain under the Romans. Penguin books.

Chicago Style (17th ed.) Citation

Winbolt, S. E. Britain Under the Romans. Harmondsworth: Penguin books, 1945.

MLA (9th ed.) Citation

Winbolt, S. E. Britain Under the Romans. Penguin books, 1945.