Citazione Stile APA (7a Edizione)

Hawking, S. W. (1989). A brief history of time: From the Big Bang to black holes (First edition.). Transworld Publishers.

Citazione stile Chigago Style (17a edizione)

Hawking, Stephen W. A Brief History of Time: From the Big Bang to Black Holes. First edition. Londres, Reino Unido: Transworld Publishers, 1989.

Citatione MLA (9a ed.)

Hawking, Stephen W. A Brief History of Time: From the Big Bang to Black Holes. First edition. Transworld Publishers, 1989.