The Upanišads. Part 1, Chandogya Upanišad, Talavakara (Kena) Upanišad, Aitareya Upanišad, Kaušitaki Upanišad, Vajasaneyi (Iśa) Upanišad (New York : Dover Publications, 1962)
Str. IX-LV: Preface to the Sacred Books of the East
Str. LVII-CI: Introduction to the Upanishads