William Walker Atkinson (2016). “WILLIAM WALKER ATKINSON Ultimate Collection – 58 Books in One Volume: The Power of Concentration, The Key To Mental Power Development & Efficiency, Thought-Force in Business and Everyday Life, The Secret of Success, Mind Power, Raja Yoga, Self-Healing by Thought Force…”, p.1692, e-artnow
William Walker Atkinson (2016). “THE POWER OF MIND - 17 Books Collection: The Key To Mental Power Development And Efficiency, Thought-Force in Business and Everyday Life, The Power of Concentration, The Inner Consciousness…: Suggestion and Auto-Suggestion + Memory: How to Develop, Train, and Use It, Practical Mental Influence + The Subconscious and the Superconscious Planes of Mind + Self-Healing by Thought Force…”, p.782, e-artnow
William Walker Atkinson (2016). “THOUGHT VIBRATION - The Law of Attraction in the Thought World (Unabridged): From the American pioneer of the New Thought movement, known for Practical Mental Influence, The Secret of Success, The Arcane Teachings, Nuggets of the New Thought, Reincarnation and the Law of Karma”, p.50, e-artnow