APA (7th ed.) Citation

Boardman, J., Griffin, J., & Murray, O. (1991). The Oxford history of the Roman world. Oxford University Press.

Chicago Style (17th ed.) Citation

Boardman, John, Jasper Griffin, and Oswyn Murray. The Oxford History of the Roman World. Oxford ; New York: Oxford University Press, 1991.

MLA (9th ed.) Citation

Boardman, John, et al. The Oxford History of the Roman World. Oxford University Press, 1991.