APA-referens

Hawking, S. W. (1988). A brief history of time: From the big bang to black holes.

Chicago-stil citat

Hawking, Stephen W. A Brief History of Time: From the Big Bang to Black Holes. Bantam Books, 1988.

MLA-referens

Hawking, Stephen W. A Brief History of Time: From the Big Bang to Black Holes. 1988.