1. Aesthetic Objectivity and the Ideal Observer Theory;Bonzon;British Journal of Aesthetics,1999
2. On Criticism
3. The Ideal Aesthetic Observer: A Second Look;Duncan;Journal of Aesthetics and Art Criticism,1970
4. Ethical Absolutism and the Ideal Observer;Firth;Philosophy and Phenomenological Research,1952
5. Beardsley, Firth, and the Ideal Observer Theory;Garner;Philosophy and Phenomenological Research,1967