Atkinson, W. W. (1908). Practical psychomancy and crystal gazing: A course of lessons on the psychic phenomena of distant sensing, clairvoyance, psychometry, crystal gazing, etc. ... Advanced Thought Pub. Co..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Atkinson, William Walker. Practical Psychomancy and Crystal Gazing: A Course of Lessons on the Psychic Phenomena of Distant Sensing, Clairvoyance, Psychometry, Crystal Gazing, Etc. ... Chicago, Ill.: Advanced Thought Pub. Co., 1908.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Atkinson, William Walker. Practical Psychomancy and Crystal Gazing: A Course of Lessons on the Psychic Phenomena of Distant Sensing, Clairvoyance, Psychometry, Crystal Gazing, Etc. ... Advanced Thought Pub. Co., 1908.
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