APA (7th ed.) Citation

Procopius. (1966). The secret history. Penguin.

Chicago Style (17th ed.) Citation

Procopius. The Secret History. Harmondsworth: Penguin, 1966.

MLA (9th ed.) Citation

Procopius. The Secret History. Penguin, 1966.

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