Charles Olson, Frances Boldereff, Ralph Maud, Sharon Thesen (1999). “Charles Olson and Frances Boldereff: A Modern Correspondence”, p.336, Wesleyan University Press
Vani Hari (2015). “The Food Babe Way: Break Free from the Hidden Toxins in Your Food and Lose Weight, Look Years Younger, and Get Healthy in Just 21 Days!”, p.121, Hachette UK