John Cage, »Indeterminacy (1958)«, in: John Cage (Hg.), Silence:Lectures and Writings, Middletown Conn 1973

@incollection{Cage.1973,
 author = {Cage, John},
 title = {Indeterminacy (1958)},
 pages = {35-40},
 publisher = {Wesleyan University Press},
 isbn = {9780819560285},
 editor = {Cage, John},
 booktitle = {Silence:Lectures and Writings},
 year = {1973},
 address = {Middletown  Conn}
}