(1981). Civilization Past & Present Vol. 2 T. Walter Wallbank...[et.al.]. Scott, Foresman and Company.
Chicago-viite (17. p.)Civilization Past & Present Vol. 2 T. Walter Wallbank...[et.al.]. Scott, Foresman and Company, 1981.
MLA-viite (8. p.)Civilization Past & Present Vol. 2 T. Walter Wallbank...[et.al.]. Scott, Foresman and Company, 1981.
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