Robert Storr, Gerhard Richter, Museum of Modern Art (New York, N.Y.) (2002). “Gerhard Richter: Forty Years of Painting”, p.42, The Museum of Modern Art
Simon Greenleaf (1846). “An Examination of the Testimony of the Four Evangelists, by the Rules of Evidence Administered in Courts of Justice: With an Account of the Trial of Jesus”, p.30