1. Anscombe, G. E. M. (1958). Intention. New York: Oxford University Press.
2. Aquinas, T. (2014 [1485]). The Summa Theologica: Complete edition [Translation: Fathers of the English Dominican province]. New York: Catholic Way Publishing.
3. Austin, J. (1879). Lectures on jurisprudence, or the philosophy of positive law. London: John Murray.
4. Austin, J. (1954 [1832]). The province of jurisprudence determined. London: The Curwen Press.
5. Bentham, J. (1970:2b [1945]). Of laws in general. London: Athlone