books:
  Images:
Sol Lewitt a retrospective, organized by Gary Garrels, 2000, San Francisco Museum of Art, Yale University Press, New Haven   Sol Lewitt a retrospective, organized by Gary Garrels, 2000, San Francisco Museum of Art, Yale University Press, New Haven
Sol Lewitt , Edited by Alicia Legg, 1978, The Museum of Modern Art New York   Artstor.com
Sol Lewitt: 25 Years of Wall Drawings, 1968-93, Jock Reynolds, Andrea Miller-Keller, 1994, Addison Gallery of Amer Art    
     
All Quotes taken from :    
Sol Lewitt a retrospective, organized by Gary Garrels, 2000, San Francisco Museum of Art, Yale University Press, New Haven