APA (7th ed.) Citation

Gibbon, E. (1996). The decline and fall of the Roman Empire (2nd ed., 6th print.). Encyclopædia Britannica.

Chicago Style (17th ed.) Citation

Gibbon, Edward. The Decline and Fall of the Roman Empire. 2nd ed., 6th print. Chicago: Encyclopædia Britannica, 1996.

MLA (9th ed.) Citation

Gibbon, Edward. The Decline and Fall of the Roman Empire. 2nd ed., 6th print. Encyclopædia Britannica, 1996.