Cita APA (7th ed.)

Hawking, S. W. (1989). A brief history of time: From the big bang to black holes. Bantam.

Cita Chicago (17th ed.)

Hawking, Stephen W. A Brief History of Time: From the Big Bang to Black Holes. New York: Bantam, 1989.

Cita MLA (9th ed.)

Hawking, Stephen W. A Brief History of Time: From the Big Bang to Black Holes. Bantam, 1989.