Whittaker, C. R. (1997). Frontiers of the Roman Empire: A social and economic study. Baltimore, Maryland: The Johns Hopkins University Press.
استشهاد بنمط شيكاغوWhittaker, C. R. Frontiers of the Roman Empire: A Social and Economic Study. Baltimore, Maryland: The Johns Hopkins University Press, 1997.
MLA استشهادWhittaker, C. R. Frontiers of the Roman Empire: A Social and Economic Study. Baltimore, Maryland: The Johns Hopkins University Press, 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.