APA (7th ed.) Citation

Procopius & Williamson, G. A. (1981). The secret history (Reprint.). Penguin Books.

Chicago Style (17th ed.) Citation

Procopius and G. A. Williamson. The Secret History. Reprint. London: Penguin Books, 1981.

MLA (9th ed.) Citation

Procopius and G. A. Williamson. The Secret History. Reprint. Penguin Books, 1981.

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