Hawking, S. W. (1988). A brief history of time. Bantam Books.
Chicago Style aipamenaHawking, S. W. A Brief History of Time. New York: Bantam Books, 1988.
MLA aipamenaHawking, S. W. A Brief History of Time. Bantam Books, 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.