Cita APA (7th ed.)
Richmond, I. A. (1955). Roman Britain. Penguin Books.
Cita Chicago (17th ed.)
Richmond, I. A. Roman Britain. Harmondsworth, Middlesex, U.K.: Penguin Books, 1955.
Cita MLA (9th ed.)
Richmond, I. A. Roman Britain. Penguin Books, 1955.
Atenció: Aquestes cites poden no estar 100% correctes.