1. Geach, P. 1957.Mental Acts17–22. 33–44
2. Geach, P. 1957.Mental Actsv–v.
3. 1969.Religious Thinking from Childhood to Adolescence46–46.
4. Smart, N. 1968.Secular Education and the Logic of Religion15–18. and K. Ward,The Concept of God(1974), chs 1–4.