Ferguson, K. (1991). Stephen Hawking: Quest for a theory of everything. Bantam.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFerguson, Kitty. Stephen Hawking: Quest for a Theory of Everything. Toronto: Bantam, 1991.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFerguson, Kitty. Stephen Hawking: Quest for a Theory of Everything. Bantam, 1991.
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