66
5. Chas S. Clifton (ed.), Encyclopaedia of Heresies and Heretics, ABC–Clio Inc., Santa Barbara, 1992, p. 49.
67
6. See Chapters 4, 5 and 6 below.
68
7. Malcolm Lambert, The Cathars, Blackwell, Oxford, 1998, p. 4.
69
8. See Jonathan Sumption, The Albigensian Crusade, Faber and Faber, London, 1999, pp. 28–30. See also Arthur Guirdham, The Great Heresy: the History and Beliefs of the Cathars, C. W. Daniel Company Ltd., Saffron Walden, 1993, p. 23.
