81
20. Guirdham, op. cit., p. 15.
82
21. Ibid., p. 15.
83
22. Cited in Burl, op. cit., p. 21.
84
23. Barber, op. cit., pp. 65–66.
85
24. Ibid., p. 66.
86
25. Ibid., p. 25.
87
26. Malcolm Lambert,Medieval Heresy: Popular Movements from the Gregorian Reform to the Reformation, Blackwell, Oxford, 1992, p. 57.
88
27. Cited in Lambert, The Cathars, p. 39.
89
28. Cited in ibid., pp. 39–40.
90
29. Steven Runciman, The Medieval Manichee: A Study of Christian Dualist Heresy, Cambridge University Press, Cambridge, 1999, p. 121; Sumption, op. cit, p. 39.
