Leech 1991, p. 37; Leech 2002a. ——— (1991). "The Junkies' Doctors and the London Drug Scene in the 1960s: Some Remembered Fragments". In Whynes, David K.; Bean, Philip T. (eds.). Policing and Prescribing: The British System of Drug Control. Basingstoke, England: Macmillan. pp. 35–59. doi:10.1007/978-1-349-11451-1. ISBN978-0-333-52229-5. ——— (2002a) [1985]. Experiencing God: Theology as Spirituality. Eugene, Oregon: Wipf and Stock Publishers. ISBN978-1-57910-613-3.
Croft 2016; Latham 1999, p. 16. Croft, W. S. (2016). "Anglo-Catholic Theology". In Davie, Martin; Grass, Tim; Holmes, Stephen R.; McDowell, John; Noble, T. A. (eds.). New Dictionary of Theology: Historical and Systematic (2nd ed.). Downers Grove, Illinois: InterVarsity Press. ISBN978-0-8308-7962-5. Latham, Steven Foster (1999). "Is There Any Word from the Lord?" Schools of Contemporary Christian Prophecy(PDF) (PhD thesis). London: King's College, London. Retrieved 2 October 2017.