Books, Brochures, and Chapters>Book:  Hawking , Stephen (2018), Brief Answers to the Big Questions, Retrieved on 2019-03-02

Books, Brochures, and Chapters>Book:  Hawking , Stephen (2009-11-10), A Brief History Of Time, Transworld Digital, Retrieved on 2012-06-04

Source Material [books.google.com]

Books, Brochures, and Chapters>Book:  Hawking , Stephen and Krauss, Lawrence (2007-07-10), The Physics of Star Trek, Basic Books (AZ), Retrieved on 2012-03-22

Source Material [books.google.com]

Books, Brochures, and Chapters>Book:  Hawking , Stephen and Copernicus , Nicolaus (2004-11-30), On The Revolutions of Heavenly Spheres, Running Pr Book Pub, Retrieved on 2012-02-16

Source Material [books.google.com]

Books, Brochures, and Chapters>Book:  Hawking , Stephen and Hawking , Lucy (2009-05-19), George's Secret Key to the Universe, Simon & Schuster Children's Publishing, Retrieved on 2011-06-02