swami Satyananda Saraswati. (2013). Four Chapters on Freedom (1st.). Bihar School of Yoga.
Chicago-referens (17:e uppl.)swami Satyananda Saraswati. Four Chapters on Freedom. 1st. New Delhi: Bihar School of Yoga, 2013.
MLA-referens (9:e uppl.)swami Satyananda Saraswati. Four Chapters on Freedom. 1st. Bihar School of Yoga, 2013.
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