APA (7th ed.) Citation

Gibbon, E. History of the Decline and Fall of the Roman Empire — Volume 3 — Folio format.

Chicago Style (17th ed.) Citation

Gibbon, Edward. History of the Decline and Fall of the Roman Empire — Volume 3 — Folio Format.

MLA (9th ed.) Citation

Gibbon, Edward. History of the Decline and Fall of the Roman Empire — Volume 3 — Folio Format.

Warning: These citations may not always be 100% accurate.