Ziffrin, M. J. (1994). Carl Ruggles: Composer, painter, and storyteller. University of Illinois Press.
Citace podle Chicago (17th ed.)Ziffrin, Marilyn J. Carl Ruggles: Composer, Painter, and Storyteller. Urbana: University of Illinois Press, 1994.
Citace podle MLA (9th ed.)Ziffrin, Marilyn J. Carl Ruggles: Composer, Painter, and Storyteller. University of Illinois Press, 1994.
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