Gaya APA

Hawking, Stephen. (2018). Brief answers to big questions . United States: Bantam Books.

Gaya Chicago

Hawking, Stephen. Brief answers to big questions. United States: Bantam Books, 2018. Text.

Gaya MLA

Hawking, Stephen. Brief answers to big questions. United States: Bantam Books, 2018. Text.

Gaya Turabian

Hawking, Stephen. Brief answers to big questions. United States: Bantam Books, 2018. Print.