Cita APA (7a ed.)

Winks, R. W. (1991). Frederick Billings: A life. Oxford University Press.

Cita Chicago Style (17a ed.)

Winks, Robin W. Frederick Billings: A Life. New York: Oxford University Press, 1991.

Cita MLA (8a ed.)

Winks, Robin W. Frederick Billings: A Life. Oxford University Press, 1991.

Precaución: Estas citas no son 100% exactas.