Burton, Susan (June 16, 2010), "Shoe-Leather Reporting: A history of well-done meat in America.", Slate The Culinary Institute of America (2011).
Burton, Susan (ngày 16 tháng 6 năm 2010), “Shoe-Leather Reporting: A history of well-done meat in America.”, Slate  The Culinary Institute of America (2011).