Twitchell, Paul, The Tiger’s Fang. Crystal, MN: Illuminated Way Publishing. 1967.
Twitchell, Paul. The Shariyat Ki Sugmad Books One & Two. Illuminated Way Press, Las Vegas, Nevada. 1971.
Eadie, Betty, and Curtis Taylor. Embraced By The Light.
New York, NY: Gold Leaf Press and Bantam Books, 1994.
Brother Lawrence, Conversations and Letters of Brother Lawrence.
The Practice of the Presence of God. New York, NY: 2009.
Author Unknown, Charts of Heavens, Sant Mat, Radhasomi, Publisher Unknown. Surat Shabda Yoga, Spiritual Awakening Radio.com, 2010.
Twitchell, Paul. The Spiritual Notebook, Illuminated Way Press, San Diego CA. 1971
M. Allen Kazeley, Planes of Existence. Kheper.net. U.S. 2012.
Theosophia, The Four Lower Bodies And Worlds, Theosophia Inc. Shangrala.org. 2010.
Pythagoras, Plato, Phaidias, Gopal Das, Lai Tsi, Rebazar Tarzs, Yauble Sacabi, Paul Twitchell, Zadok, etc. (VARDAN Masters throughout history), Oral Dissertation, The God Worlds of VARDANKAR.
Brinkley, Dannion. Saved By The Light. New York, NY Harper Collins Books, 2008.
Newton, Michael, Journey Of Souls, Saint Paul, MN: Llewllyn Publications, 1994, 2003.