Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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