1. Armstrong, D. (1978). Universals and scientific realism. Cambridge: Cambridge University Press.
2. Armstrong, D. (1986). In defence of structural universals. Australasian Journal of Philosophy, 64, 85–88.
3. Armstrong, D. (1988). Are quantities relations? A Reply to Bigelow and Pargetter. Philosophical Studies, 54, 305–316.
4. Armstrong, D. (1989). Universals: An opinionated introduction. Colorado: Westview Press.
5. Armstrong, D. (1997). A world of states of affairs. Cambridge: Cambridge University Press.