Kant, Immanuel: Kritik der reinen Vernunft , (Tysk original eller engelsk eller norsk oversettelse ) .
Allison, Henry E.: Kant's transcendental Idealism. An interpretation and defense, Yale UP 2004 (NB). Revised and enlarged edition.
Langton, Rae: Kantian Humility, Oxford 1998 . Clarendon Press.