APA (7th ed.) Citation

Whittaker, C. R. (1997). Frontiers of the Roman empire: A social and economic study. The Johns Hopkins University Press.

Chicago Style (17th ed.) Citation

Whittaker, C. R. Frontiers of the Roman Empire: A Social and Economic Study. Baltimore: The Johns Hopkins University Press, 1997.

MLA (8th ed.) Citation

Whittaker, C. R. Frontiers of the Roman Empire: A Social and Economic Study. The Johns Hopkins University Press, 1997.