APA Style

Hawking, L., Hawking, S. (2013). George #3: george and the big bang . New York: Simon & Schuster Books for Young Readers (February 1, 2005).

MLA Style

Hawking, Lucy., Hawking, Stephen. "George #3: george and the big bang". New York: Simon & Schuster Books for Young Readers (February 1, 2005), 2013. Text.