Ridley, A. (1997). Not Ideal: Collingwood's Expression Theory. The Journal of Aesthetics and Art Criticism.
Chicago-referens (17:e uppl.)Ridley, Aaron. "Not Ideal: Collingwood's Expression Theory." The Journal of Aesthetics and Art Criticism 1997.
MLA-referens (8:e uppl.)Ridley, Aaron. "Not Ideal: Collingwood's Expression Theory." The Journal of Aesthetics and Art Criticism, 1997.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.