Cita APA

Toynbee, A. 1., & Somervell, D. C. 1. (1949). A study of history (2nd impression.). London [etc.]: Oxford University Press.

Citación estilo Chicago

Toynbee, Arnold 1889-1975, and D. C. 1885-1965 Somervell. A Study of History. 2nd impression. London [etc.]: Oxford University Press, 1949.

Cita MLA

Toynbee, Arnold 1889-1975, and D. C. 1885-1965 Somervell. A Study of History. 2nd impression. London [etc.]: Oxford University Press, 1949.