Birnbaum, D. (1998). The good, the bad and the ugly: Daniel Birnbaum on porn, photography and Picabia's late paintings. frieze.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBirnbaum, Daniel. "The Good, the Bad and the Ugly: Daniel Birnbaum on Porn, Photography and Picabia's Late Paintings." Frieze 1998.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBirnbaum, Daniel. "The Good, the Bad and the Ugly: Daniel Birnbaum on Porn, Photography and Picabia's Late Paintings." Frieze, 1998.
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