APA (7th ed.) Citation

Ure, P. N. (1951). Justinian and his age. Penguin Books.

Chicago Style (17th ed.) Citation

Ure, P. N. Justinian and His Age. Harmondsworth, Middlesex: Penguin Books, 1951.

MLA (9th ed.) Citation

Ure, P. N. Justinian and His Age. Penguin Books, 1951.

Warning: These citations may not always be 100% accurate.