Barraclough, G. (1979). Turning Points in World History. Thames and Hudson.
Chicago-čujuhus (17. p.)Barraclough, Geoffrey. Turning Points in World History. Thames and Hudson, 1979.
MLA-čujuhus (9. p.)Barraclough, Geoffrey. Turning Points in World History. Thames and Hudson, 1979.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.