Michael Baigent, Richard Leigh and Henry Lincoln, Holy Blood, Holy Grail, New York: Dell, 1983

Michael Baigent, Richard Leigh and Henry Lincoln, The Messianic Legacy, New York: Dell, 1989

Michael Baigent and Richard Leigh, The Dead Sea Scrolls Deception, New York: Simon&Schuster, 1993

Tracy Twyman and Boyd Rice, The Vessel of God, York Beach, ME: Weiser Books, 2004

Nicholas de Vere, The Dragon Legacy, San Diego, CA.: The Book Tree, 2004

Ean and Deike Begg, In Search of the Holy Grail and the Precious Blood, Thorsons, London: 1995

Laurence Gardner, Bloodline of the Holy Grail, Gloucester, MA, Fair Winds Press, 2002

Christopher Knight and Robert Lomas, Uriel's Machine, The Ancient Origins of Science, London: Arrow, 2000

Alison Weir, Britain's Royal Families, London: Pimlico, 2002

James M. Robinson, ed., The Nag Hammadi Library in English, San Francisco, CA: HarperCollins 1990, pp. 139–160, Wesley W. Isenbeig writes p. 141

Bentley Layton, The Gnostic Scriptures, Ancient Wisdom for the New Age, Anchor Bible Reference Library — ABRL, Doubleday, 1987

Geoffrey Ash, Mythology of the British Isles, London: Methuen, 1990

David Wood and Ian Cambell, Poussin's Secret, Tunbridge Wells, England: Genisis Trading Co. Ltd., 1995

HRH Prince Michael of Alban, The Forgotten Monarchy of Scotland, London: Element, 1998

Ben Weinreb and Christopher Hibbert, The London Encyclopaedia, London: Papermac, 1983

Joseph Maxwell, The Tarot, London: Neville Spearman, 1975

Ivor H. Evans, Brewer's Dictionary of Phrase and Fable, New York: ElarperResource, 200

Robert Graves, The Greek Myths, New York: Penguin USA, 1993

Christopher Haigh (editor), The Cambridge Historical Encyclopedia of Great Britain and Ireland, London: Cambridge University Press, 1985

Tracy Twyman, Dagobert’s Revenge Magazine