Ferguson, K. (1991). Stephen Hawking: Quest for a theory of everything. Bantam.
Čikaški stil citiranja (17. izdanje)Ferguson, Kitty. Stephen Hawking: Quest for a Theory of Everything. Toronto: Bantam, 1991.
MLA način citiranja (8. izdanje)Ferguson, Kitty. Stephen Hawking: Quest for a Theory of Everything. Bantam, 1991.
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