The dark ages & the age of gold,

MLA

Fraser, Russell A. The Dark Ages & the Age of Gold. Princeton, N.J.,: Princeton University Press, 1973.

APA

Fraser, R. A. (1973). The dark ages & the age of gold. Princeton, N.J.,: Princeton University Press.

Chicago

Fraser, Russell A., The Dark Ages & the Age of Gold,. Princeton, N.J.,: Princeton University Press, 1973.