Ferguson, K. (1992). Stephen Hawking: Quest for a theory of everying. Bantam.
Chicago-čujuhus (17. p.)Ferguson, Kitty. Stephen Hawking: Quest for a Theory of Everying. Toronto: Bantam, 1992.
MLA-čujuhus (9. p.)Ferguson, Kitty. Stephen Hawking: Quest for a Theory of Everying. Bantam, 1992.
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