MLA

Ferguson, Howard. Keyboard Interpretation From the 14th to the 19th Century: An Introduction. New York: Oxford University Press, 1975.

APA

Ferguson, H. (1975). Keyboard interpretation from the 14th to the 19th century: An introduction. New York: Oxford University Press.

Chicago

Ferguson, Howard Keyboard Interpretation From the 14th to the 19th Century: An Introduction. New York: Oxford University Press, 1975.