Concise survey of this school and the related doctrine of "ethical emotivism."
Lecture reviewing the development of this doctrine and its impact on psychology.
A concise description of this movement.
Entry from this philosophical database, including an excerpt from The Ism Book.
Collection of online papers in Microsoft Word format, with abstracts in HTML.
A section from Andras Gedo's work Crisis Consciousness in Contemporary Philosophy.
Entry from the openly-edited encyclopedia.