APA Style
Hawking, Stephen, Lucy, Hawking. (2007).
George's Secret Key to the Universe .
New York:
Simon & Schuster Book.
Chicago Style
Hawking, Stephen, Lucy, Hawking.
George's Secret Key to the Universe.
New York:
Simon & Schuster Book,
2007.
Text.
MLA Style
Hawking, Stephen, Lucy, Hawking.
George's Secret Key to the Universe.
New York:
Simon & Schuster Book,
2007.
Text.
Turabian Style
Hawking, Stephen, Lucy, Hawking.
George's Secret Key to the Universe.
New York:
Simon & Schuster Book,
2007.
Print.