Sawyer, R. K. (2000). Improvisation and the Creative Process: Dewey, Collingwood, and the Aesthetics of Spontaneity. The Journal of Aesthetics and Art Criticism.
Chicago-referens (17:e uppl.)Sawyer, R. Keith. "Improvisation and the Creative Process: Dewey, Collingwood, and the Aesthetics of Spontaneity." The Journal of Aesthetics and Art Criticism 2000.
MLA-referens (8:e uppl.)Sawyer, R. Keith. "Improvisation and the Creative Process: Dewey, Collingwood, and the Aesthetics of Spontaneity." The Journal of Aesthetics and Art Criticism, 2000.
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