(en) Maricel E. Presilla, The New Taste of Chocolate: a Cultural and Natural History of Cacao with Recipes, Ten Speed Press, (ISBN1-58008-143-6, lire en ligne), p. 29-31, 138.
Anne Byrn, American Cake: From Colonial Gingerbread to Classic Layer, the Stories and Recipes Behind more than 125 of our Best-Loved Cakes, Rodale, (ISBN9781623365431, OCLC934884678), p. 39, 68.