• P. Olivelle (trans.), Upaniṣads (Oxford: 1996).

• B. Black, “The Upaniṣads,” in the Internet Encyclopedia of Philosophy.

• J. Brereton, “The Upaniṣads,” in W.T. de Bary and I. Bloom (eds), Approaches to the Asian Classics (New York: 1990), 115–35.

• S. Cohen, Text and Authority in the Older Upaniṣads (Leiden: 2008).

• B. Smith, Reflections on Resemblance, Ritual and Religion (New York: 1989).