(en) Adi Shankara (trad. Alladi Mahadeva Sastri), Commentary of the Bhagavad-Gita, Samata books, (lire en ligne), p. 482.
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(en) Jonardon Ganeri, The Concealed Art of the Soul : Theories of Self and Practices of Truth in Indian Ethics and Epistemology, Oxford, Clarendon Press (Oxford University Press), , 288 p. (ISBN9780191607042), p. 113, lire: [1]. Consulté le .
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(en) Georg Feuerstein, The Deeper Dimension of Yoga : Theory and Practice, Shambhala Publications, (lire en ligne), p. 47
(en) Jeaneane D. Fowler, The Bhagavad Gita : A Text and Commentary for Students, Sussex Academic Press, (lire en ligne), p. 52.