Hill, D. R. (1984). A history of engineering in classical and medieval times. London: Croom Helm.
استشهاد بنمط شيكاغوHill, Donald Routledge. A History of Engineering in Classical and Medieval Times. London: Croom Helm, 1984.
MLA استشهادHill, Donald Routledge. A History of Engineering in Classical and Medieval Times. London: Croom Helm, 1984.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.