(2015). HISTORY of the world: Earliest times to the present day. World Publications Group, 2015. 921p.
Chicago-viite (17. p.)HISTORY of the World: Earliest Times to the Present Day. World Publications Group, 2015. 921p, 2015.
MLA-viite (9. p.)HISTORY of the World: Earliest Times to the Present Day. World Publications Group, 2015. 921p, 2015.
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