ROHAN BOOK CO. (2001). ALBERT EINSTEIN: WORLD GREAT SCIENTIST SERIES.
Chicago-čujuhus (17. p.)ROHAN BOOK CO. ALBERT EINSTEIN: WORLD GREAT SCIENTIST SERIES. 2001.
MLA-čujuhus (9. p.)ROHAN BOOK CO. ALBERT EINSTEIN: WORLD GREAT SCIENTIST SERIES. 2001.
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