Cita APA

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

Chicago Edition Citation

Gribbin, John, i Michael White. Stephen Hawking: A Life in Science. New York, Dutton, 1992.

Cita MLA

Gribbin, John, i Michael White. Stephen Hawking: A Life in Science. 1992.