Charles Dickens (1844). “The Life and Adventures of Martin Chuzzlewit, His Relatives, Friends and Enemies: Comprising All His Wills and His Ways, with an Historical Record of what He Did, and what He Didn't ...”, p.245
T. Colin Campbell, Thomas M. Campbell (II.) (2006). “The China Study: The Most Comprehensive Study of Nutrition Ever Conducted and the Startling Implications for Diet, Weight Loss and Long-term Health”, p.66, BenBella Books
T. Colin Campbell, Thomas M. Campbell (II.) (2006). “The China Study: The Most Comprehensive Study of Nutrition Ever Conducted and the Startling Implications for Diet, Weight Loss and Long-term Health”, p.21, BenBella Books