APA (7th ed.) Citation

MacFayden, D. (1920). The history of the title imperator under the Roman empire.

Chicago Style (17th ed.) Citation

MacFayden, Donald. The History of the Title Imperator Under the Roman Empire. 1920.

MLA (9th ed.) Citation

MacFayden, Donald. The History of the Title Imperator Under the Roman Empire. 1920.

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