Cooper, H. (1999). Line, Form, Color: 1951 ; Ellsworth Kelly. Richter.
Lua i Stíl Chicago (17ú heag.)Cooper, Harry. Line, Form, Color: 1951 ; Ellsworth Kelly. Düsseldorf: Richter, 1999.
Lua MLA (8ú heag.)Cooper, Harry. Line, Form, Color: 1951 ; Ellsworth Kelly. Richter, 1999.
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