Leffingwell, E. (1989). Sao Paulo Diary: A posthumous Neil Williams exhibition in Sao Paulo prompts this tour through Brazil's modernist histor and its pluralist contemporary art scene. Art in America.
Chicago Style (17. basım) AtıfLeffingwell, Edward. "Sao Paulo Diary: A Posthumous Neil Williams Exhibition in Sao Paulo Prompts This Tour Through Brazil's Modernist Histor and Its Pluralist Contemporary Art Scene." Art in America 1989.
MLA (8th ed.) AtıfLeffingwell, Edward. "Sao Paulo Diary: A Posthumous Neil Williams Exhibition in Sao Paulo Prompts This Tour Through Brazil's Modernist Histor and Its Pluralist Contemporary Art Scene." Art in America, 1989.
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