Cita APA (7th ed.)

Hawking, S., & Mlodinow, L. (2008). A Brief History of Time. Bantam Press.

Cita Chicago (17th ed.)

Hawking, Stephen, i Leonard Mlodinow. A Brief History of Time. London: Bantam Press, 2008.

Cita MLA (9th ed.)

Hawking, Stephen, i Leonard Mlodinow. A Brief History of Time. Bantam Press, 2008.