APA (7th ed.) Citation

Ferrero, G., Zimmern, S. A. E., & Chaytor, H. J. (1907). The greatness and decline of Rome. G. P. Putnam's sons.

Chicago Style (17th ed.) Citation

Ferrero, Guglielmo, Sir Alfred Eckhard Zimmern, and Henry John Chaytor. The Greatness and Decline of Rome. New York: G. P. Putnam's sons, 1907.

MLA (9th ed.) Citation

Ferrero, Guglielmo, et al. The Greatness and Decline of Rome. G. P. Putnam's sons, 1907.