J. Sinha, Indian Psychology, p. 142, at Google Books, Volume 2, Motilal Banarsidas, page 142
K. N. Aiyar (1914), Thirty Minor Upanishads, Kessinger Publishing, Chapter 22, pages 173-176
Lorenzen, David (1972). The Kāpālikas and Kālāmukhas. University of California Press. pp. 186–190.
Stuart Sovatsky (1998), Words from the Soul: Time East/West Spirituality and Psychotherapeutic Narrative, State University of New York, page 21.
Subramuniya (2003). Merging with Śiva: Hinduism's contemporary metaphysics. Himalayan Academy Publications. p. 155.
Svātmārāma; Pancham Sinh (1997). The Hatha Yoga Pradipika (5 ed.). Forgotten Books. p. 14. "अथ यम-नियमाः अहिंसा सत्यमस्तेयं बरह्यछर्यम कश्हमा धृतिः दयार्जवं मिताहारः शौछम छैव यमा दश १७"
K. N. Aiyar (1914), Thirty Minor Upanishads, Kessinger Publishing, Chapter 22, pages 173-176
Lorenzen, David (1972). The Kāpālikas and Kālāmukhas. University of California Press. pp. 186–190.
Stuart Sovatsky (1998), Words from the Soul: Time East/West Spirituality and Psychotherapeutic Narrative, State University of New York, page 21.
Subramuniya (2003). Merging with Śiva: Hinduism's contemporary metaphysics. Himalayan Academy Publications. p. 155.
Svātmārāma; Pancham Sinh (1997). The Hatha Yoga Pradipika (5 ed.). Forgotten Books. p. 14. "अथ यम-नियमाः अहिंसा सत्यमस्तेयं बरह्यछर्यम कश्हमा धृतिः दयार्जवं मिताहारः शौछम छैव यमा दश १७"