APA (7th ed.) Citation

Rosen, W. (2008). Justinian's flea: The first great plague, and the end of the Roman Empire. Penguin Books.

Chicago Style (17th ed.) Citation

Rosen, William. Justinian's Flea: The First Great Plague, and the End of the Roman Empire. New York, N.Y.: Penguin Books, 2008.

MLA (8th ed.) Citation

Rosen, William. Justinian's Flea: The First Great Plague, and the End of the Roman Empire. Penguin Books, 2008.

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