C. C. Massey. (1909). Thoughts of a Modern Mystic. A Selection from the Writings of the Late C. C. Massey, ed.
William F. Barrett (London: Regan Paul, Trench & Co).
^Pert, Alan. (2007). Red Cactus: The Life of Anna Kingsford. Books & Writers. pp. 90-91.
ISBN978-1740184052
^Versluis, Arthur. (2007). Magic and Mysticism: An Introduction to Western Esoteric Traditions. Rowman & Littlefield Publishers. p. 120.
ISBN978-0742558366
^Lavoie, Jeffrey D. (2012). The Theosophical Society: The History of a Spiritualist Movement. Brown Walker Press. pp. 73-74.
ISBN978-1612335537
^Lavoie, Jeffrey D. (2014). Search for Meaning in Victorian Religion: The Spiritual Journey and Esoteric Teachings of Charles Carleton Massey. Lehigh University Press. pp. 135-136.
ISBN978-1611461848
^Slotten, Ross A. (2004). The Heretic in Darwin's Court: The Life of Alfred Russel Wallace. Columbia University Press. p. 342.
ISBN978-0231130110
^Fichman, Martin. (2004). An Elusive Victorian: The Evolution of Alfred Russel Wallace. University of Chicago Press. p. 186.
ISBN978-0226246130
Further reading
Jeffrey D. Lavoie. (2014). Search for Meaning in Victorian Religion: The Spiritual Journey and Esoteric Teachings of Charles Carleton Massey. Lehigh University Press.
ISBN978-1611461848