Cita APA (7a ed.)

Toynbee, A. J., & Somervell, D. C. (1951). A study of history ([1st ed., 4th impr.].). Oxford University Press.

Cita Chicago Style (17a ed.)

Toynbee, Arnold Joseph, y D. C. Somervell. A Study of History. [1st ed., 4th impr.]. London [etc.]: Oxford University Press, 1951.

Cita MLA (9a ed.)

Toynbee, Arnold Joseph, y D. C. Somervell. A Study of History. [1st ed., 4th impr.]. Oxford University Press, 1951.