APA (7th ed.) Citation

Gibbon, E. (1994). The decline and fall of the Roman Empire (2nd ed., 5th printing.). Encyclopaedia Britannica.

Chicago Style (17th ed.) Citation

Gibbon, Edward. The Decline and Fall of the Roman Empire. 2nd ed., 5th printing. Chicago, Ill. [etc.]: Encyclopaedia Britannica, 1994.

MLA (9th ed.) Citation

Gibbon, Edward. The Decline and Fall of the Roman Empire. 2nd ed., 5th printing. Encyclopaedia Britannica, 1994.