1. AA Alcoholics Anonymous (1976) third edition.
2. Aquinas (1975) Summa Theologica 2a 2ae. Byre & Spoltiswoode, London
3. Aristotle (1976) Nichomachean ethics. Penguin, London
4. Billings A (1992) Pastors or counsellors? Contact 108(2):3–9
5. Bretherton L (2006) Hospitality as holiness. Routledge, London