Toynbee, A. J., & Somervell, D. (1946). A study of history. Geoffrey Cumberlege, Oxford University Press.
Chicago-čujuhus (17. p.)Toynbee, Arnold J., juo D.C Somervell. A Study of History. London: Geoffrey Cumberlege, Oxford University Press, 1946.
MLA-čujuhus (9. p.)Toynbee, Arnold J., juo D.C Somervell. A Study of History. Geoffrey Cumberlege, Oxford University Press, 1946.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.