APA (7th ed.) Citation

Barry, J. M. (2020). The great influenza: The epic story of the deadliest plague in history. Penguin Books.

Chicago Style (17th ed.) Citation

Barry, John M. The Great Influenza: The Epic Story of the Deadliest Plague in History. New York: Penguin Books, 2020.

MLA (8th ed.) Citation

Barry, John M. The Great Influenza: The Epic Story of the Deadliest Plague in History. Penguin Books, 2020.

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