A Brief History of Time

A Zygon reads the book. (COMIC: A Rose by Any Other Name)

You may be looking for the book by Benny Summerfield.

A Brief History of Time was a book written by Professor Stephen Hawking. The Doctor had a copy in the TARDIS library. (PROSE: Fear of the Dark, AUDIO: Zagreus) The Ninth Doctor later read his copy on the tube, laughing heartily, as noted by Samuel Wilkinson on whoisdoctorwho.co.uk. (PROSE: Have You Seen This Man?)

Bernice Summerfield read A Brief History of Time in the TARDIS after the Garvond had been defeated. (PROSE: The Dimension Riders)

Chris Cwej read A Brief History of Time after his encounter with the Carnival Queen; he thought it was a children's book. (PROSE: The Death of Art)