Willson, T. (1987). How I learned soul travel: The true experiences of a student in Eckankar, the ancient science of soul travel. Illuminated Way Publishing Inc.
Παραπομπή σε μορφή Chicago (17η εκδ.)Willson, Terrill. How I Learned Soul Travel: The True Experiences of a Student in Eckankar, the Ancient Science of Soul Travel. Crystal: Illuminated Way Publishing Inc, 1987.
Παραπομπή σε μορφή MLA (8th εκδ.)Willson, Terrill. How I Learned Soul Travel: The True Experiences of a Student in Eckankar, the Ancient Science of Soul Travel. Illuminated Way Publishing Inc, 1987.
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