Παραπομπή APA

Hawking, S. W. (1988). A brief history of time. Bantam Press.

Παραπομπή Chicago Style

Hawking, Stephen W. A Brief History of Time. Britain: Bantam Press, 1988.

Παραπομπή MLA

Hawking, Stephen W. A Brief History of Time. Bantam Press, 1988.