Citazione Stile APA (7a Edizione)

Hawking, S. (2018). Brief answers to the big questions (First U.S. edition.). Bantam Books.

Citazione stile Chigago Style (17a edizione)

Hawking, Stephen. Brief Answers to the Big Questions. First U.S. edition. New York: Bantam Books, 2018.

Citatione MLA (9a ed.)

Hawking, Stephen. Brief Answers to the Big Questions. First U.S. edition. Bantam Books, 2018.