Cita APA (7a ed.)
Hawking, S. W. A Brief History of Time: From the Big Bang to Black Holes. Bantam Books.
Cita estilo Chicago (17a ed.)
Hawking, Stephen W. A Brief History of Time: From the Big Bang to Black Holes. Nueva York, EUA: Bantam Books.
Cita MLA (9a ed.)
Hawking, Stephen W. A Brief History of Time: From the Big Bang to Black Holes. Bantam Books.
Precaución: Estas citas no son 100% exactas.