Brauer, David E. Pop Art: US/UK Connections, 1956-1966. Houston, TX: Menil Collection in Association with Hatje Cantz, 2001. Print.
Deitcher, David. Hand-painted Pop: American Art in Transition, 1955-62. Los Angeles: Museum of Contemporary Art, 1992. Print.
Dictionary and Thesaurus - Merriam-Webster Online. Web. 07 Sept. 2011. http://www.merriam-webster.com/dictionary.
Honnef, Klaus, and Uta Grosenick. Pop Art. Koln: Taschen, 2006. Print.
Lobel, Michael. Image Duplicator: Roy Lichtenstein and the Emergence of Pop Art. New Haven: Yale UP, 2002. Print.
Moorhouse, Paul, and Dominic Sandbrook. Pop Art Portraits. New Haven: Yale UP, 2007. Print.
Osterwold, Tilman, and Angelika Taschen. Pop Art. Koln: Taschen, 2007. Print.
Storr, Robert. Gerhard Richter: Forty Years of Painting. New York: Museum of Modern Art, 2003. Print.
Varnedoe, Kirk. High and Low: Modern Art and Popular Culture. New York: Museum Of Modern Art, NY, 1993. Print.
Weitman, Wendy. Pop Impressions: Europe/USA : Prints and Multiples from the Museum of Modern Art. New York: Museum, 1999. Print.