APA (7th ed.) Citation

Gibbon, E. (1932). The decline and fall of the Roman empire. The Modern library.

Chicago Style (17th ed.) Citation

Gibbon, Edward. The Decline and Fall of the Roman Empire. New York: The Modern library, 1932.

MLA (9th ed.) Citation

Gibbon, Edward. The Decline and Fall of the Roman Empire. The Modern library, 1932.