Vincent van Gogh, Vincent Willem Gogh (1927). “The Letters of Vincent Van Gogh to His Brother, 1872-1886: With a Memoir by His Sister-in-law, J. Van Gogh-Bonger ...”
Martín Prechtel (2013). “The Disobedience of the Daughter of the Sun: A Mayan Tale of Ecstasy, Time, and Finding One's True Form”, p.83, North Atlantic Books
Maurice Merleau-Ponty, Galen A. Johnson, Michael B. Smith (1993). “The Merleau-Ponty Aesthetics Reader: Philosophy and Painting”, p.82, Northwestern University Press