APA (7th ed.) Citation

Balsdon, J. P. V. D. (1934). The emperor Gaius: Caligula. Clarendon Pr.

Chicago Style (17th ed.) Citation

Balsdon, John P. V. D. The Emperor Gaius: Caligula. Oxford: Clarendon Pr, 1934.

MLA (9th ed.) Citation

Balsdon, John P. V. D. The Emperor Gaius: Caligula. Clarendon Pr, 1934.