HAWKING STEPHEN. (2001). UNIVERSE IN A NUTSHELL. BANTAM BOOKS.
Chicago-čujuhus (17. p.)HAWKING STEPHEN. UNIVERSE IN A NUTSHELL. NEW YORK: BANTAM BOOKS, 2001.
MLA-čujuhus (9. p.)HAWKING STEPHEN. UNIVERSE IN A NUTSHELL. BANTAM BOOKS, 2001.
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