APA (7th ed.) Citation

Barry, J. M. (2005). 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, 2005.

MLA (9th ed.) Citation

Barry, John M. The Great Influenza: The Epic Story of the Deadliest Plague in History. Penguin Books, 2005.