(en) Jacquelyn Baas, « Before Zen: The Nothing of American Dada », East–West Interchanges in American Art: A Long and Tumultuous Relationship, Smithsonian Institution Scholarly Press (consulté le )
(en) Lanza, Robert et Berman, Bob, Biocentrism : How Life and Consciousness are the Keys to Understanding the True Nature of the Universe, BenBella, , 213 p. (ISBN978-1-933771-69-4, lire en ligne)