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). “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
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
Prentice Mulford (2015). “Thoughts Are Things & The God In You - Connect With The Force Within Yourself: How to Find With Your Inner Power - From one of the New Thought pioneers, author of Your Forces and How to Use Them, Gift of Spirit & The Gift of Understanding”, p.38, e-artnow
Jane Roberts, Seth (Spirit), Robert F. Butts (1994). “The Nature of Personal Reality: Specific, Practical Techniques for Solving Everyday Problems and Enriching the Life You Know”, p.436, New World Library
Shakti Gawain (2015). “The Shakti Gawain Essentials: 3 Books in 1: Creative Visualization, Living in the Light & Developing Intuition”, p.7, Mango Media Inc.