Bayer, T. I., & Cassirer, E. (2001). Cassirer's Metaphysics of symbolic forms: A philosophical commentary. Yale University Press.
Chicago-viite (17. p.)Bayer, Thora Ilin, ja Ernst Cassirer. Cassirer's Metaphysics of Symbolic Forms: A Philosophical Commentary. New Haven: Yale University Press, 2001.
MLA-viite (9. p.)Bayer, Thora Ilin, ja Ernst Cassirer. Cassirer's Metaphysics of Symbolic Forms: A Philosophical Commentary. Yale University Press, 2001.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.