APA aipamena

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

Chicago Style aipamena

Hawking, S. W. A Brief History of Time. New York: Bantam Books, 1988.

MLA aipamena

Hawking, S. W. A Brief History of Time. Bantam Books, 1988.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.