Richardson, J. (2000). The Sorcerer's Apprentice: Picasso, Provence, and Douglas Cooper / John Richardson (2nd Printing.). Knopf.
Lua i Stíl Chicago (17ú heag.)Richardson, John. The Sorcerer's Apprentice: Picasso, Provence, and Douglas Cooper / John Richardson. 2nd Printing. New York: Knopf, 2000.
Lua MLA (8ú heag.)Richardson, John. The Sorcerer's Apprentice: Picasso, Provence, and Douglas Cooper / John Richardson. 2nd Printing. Knopf, 2000.
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