1. Ayer, A. J. Language, Truth and Logic. London: Gollancz, 1936.
2. Brink, D. O. “Moral Realism.” In The Cambridge Dictionary of Philosophy, pp. 511–12. Edited by Robert Audi. Cambridge: Cambridge University Press, 1995
3. Dreier, James. “Transforming Expressivism.” Noûs 33 (1999): 558–72
4. Dyke, Heather. “Tensed Meaning: A Tenseless Account.” Journal of Philosophical Research, (forthcoming, 2003 )
5. Gale, R. M. The Language of Time. London: Routledge and Kegan Paul, 1968