Cita APA (7a ed.)

Toynbee, A. J., & Somervell, D. C. (1947). A Study of History. Oxford University Press.

Cita Chicago Style (17a ed.)

Toynbee, Arnold Joseph, y D. C. Somervell. A Study of History. New York: Oxford University Press, 1947.

Cita MLA (8a ed.)

Toynbee, Arnold Joseph, y D. C. Somervell. A Study of History. Oxford University Press, 1947.