APA aipamena

White, M. . .., & Gribbin, J. . .. (1993). Stephen Hawking: A life in science. Penguin Books.

Chicago Style aipamena

White, Michael ., and John Gribbin. Stephen Hawking: A Life in Science. Midlesex: Penguin Books, 1993.

MLA aipamena

White, Michael ., and John Gribbin. Stephen Hawking: A Life in Science. Penguin Books, 1993.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.