APA-referens

Dales, R. C. (1973). The scientific achievement of the Middle Ages. Philadelphia: University of Pennsylvania Press.

Chicago-stil citat

Dales, Richard C. The Scientific Achievement of the Middle Ages. Philadelphia: University of Pennsylvania Press, 1973.

MLA-referens

Dales, Richard C. The Scientific Achievement of the Middle Ages. Philadelphia: University of Pennsylvania Press, 1973.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.