APA (7th ed.) Citation
Gibbon, E. (1952). The decline and fall of the Roman Empire. Penguin Books.
Chicago Style (17th ed.) Citation
Gibbon, Edward. The Decline and Fall of the Roman Empire. New York: Penguin Books, 1952.
MLA (9th ed.) Citation
Gibbon, Edward. The Decline and Fall of the Roman Empire. Penguin Books, 1952.
Warning: These citations may not always be 100% accurate.