Gaya APA

Hawking, Stephen. (2018). Brief answers to the big questions . London: John Murray.

Gaya Chicago

Hawking, Stephen. Brief answers to the big questions. London: John Murray, 2018. Text.

Gaya MLA

Hawking, Stephen. Brief answers to the big questions. London: John Murray, 2018. Text.

Gaya Turabian

Hawking, Stephen. Brief answers to the big questions. London: John Murray, 2018. Print.