Ferguson, K. (2012). Stephen Hawking: His life and work : the story and science of one of the most extraordinary, celebrated and courageous figures of our time. Bantam.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ferguson, Kitty. Stephen Hawking: His Life and Work : The Story and Science of One of the Most Extraordinary, Celebrated and Courageous Figures of Our Time. London: Bantam, 2012.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ferguson, Kitty. Stephen Hawking: His Life and Work : The Story and Science of One of the Most Extraordinary, Celebrated and Courageous Figures of Our Time. Bantam, 2012.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.