Cita APA (7a ed.)

White, M., & Gribbin, J. (1992). Stephen Hawking: A life in science. Penguin Books.

Cita Chicago Style (17a ed.)

White, Michael, y John Gribbin. Stephen Hawking: A Life in Science. London: Penguin Books, 1992.

Cita MLA (9a ed.)

White, Michael, y John Gribbin. Stephen Hawking: A Life in Science. Penguin Books, 1992.