Barraclough, G. (1979). Turning Points in World History. Thames and Hudson.
Čikaški stil citiranja (17. izdanje)Barraclough, Geoffrey. Turning Points in World History. Thames and Hudson, 1979.
MLA način citiranja (9. izdanje)Barraclough, Geoffrey. Turning Points in World History. Thames and Hudson, 1979.
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