Pepper, I. (1997). From the Aesthetics of Indifference to Negative Aesthetics: John Cage and Germany 1958-1972. October.
Chicago-Zitierstil (17. Ausg.)Pepper, Ian. "From the Aesthetics of Indifference to Negative Aesthetics: John Cage and Germany 1958-1972." October 1997.
MLA-Zitierstil (8. Ausg.)Pepper, Ian. "From the Aesthetics of Indifference to Negative Aesthetics: John Cage and Germany 1958-1972." October, 1997.
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