APA (7th ed.) Citation

Boak, A. E. R., & Sinnigen, W. G. (1921). A history of Rome to 565 A.D. Macmillan.

Chicago Style (17th ed.) Citation

Boak, Arthur Edward Romilly, and William Gurnee Sinnigen. A History of Rome to 565 A.D. New York: Macmillan, 1921.

MLA (9th ed.) Citation

Boak, Arthur Edward Romilly, and William Gurnee Sinnigen. A History of Rome to 565 A.D. Macmillan, 1921.