Philip Dormer Stanhope (4th earl of Chesterfield.), Charles Caleb Colton (1861). “Lord Chesterfield's advice to his son on men and manners. To which are added, selections from Colton's 'Lacon'.”, p.188
Kynaston McShine, Richard Serra, Lynne Cooke, Museum of Modern Art (New York, N.Y.) (2007). “Richard Serra Sculpture: Forty Years”, p.77, The Museum of Modern Art