Gaya APA

Ferguson, K. (1991). Stephen Hawking His Life And Work : the story and science of one of the most extraordinary, celebrated and courageous figure of our time . London: Pinguin Random House.

Gaya MLA

Ferguson, Kitty. "Stephen Hawking His Life And Work : the story and science of one of the most extraordinary, celebrated and courageous figure of our time". London: Pinguin Random House, 1991. Text.