1. Anscombe, G. E. M. (1957) Intention (Ithaca: Cornell University Press).
2. Bennett, Jonathan (1981) ‘Morality and Consequences’, in Sterling McMurrin (ed.), Tanner Lectures on Human Values, Vol. 2, pp. 47–116 (Salt Lake City: University of Utah Press).
3. Bratman, Michael (1990) Intentions, Plans, and Practical Reason (Cambridge, Mass.: Harvard University Press).
4. Fischer, John Martin, et al. (1993) ‘Quinn on Double Effect: the Problem of “Closeness”’, Ethics 103, pp. 707–25.
5. Foot, Philippa (1967) ‘The Problem of Abortion and the Doctrine of Double Effect’, Oxford Review No. 5, pp. 5–15; reprinted in Foot, Virtues and Vices (Berkeley: University of California Press, 1978), ch.1.