Still, C. Brief an Gordon Smith 1959: Clyfford Still. 1940 - 1991.(1998).
Lua i Stíl Chicago (17ú heag.)Still, Clyfford. "Brief an Gordon Smith 1959: Clyfford Still." 1940 - 1991.(1998) .
Lua MLA (8ú heag.)Still, Clyfford. "Brief an Gordon Smith 1959: Clyfford Still." 1940 - 1991.(1998), .
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