Radhakrishnan, S. (1953). The principal upanisads: By S. Radhakrishnan. : Unwin brothers.
Lua i Stíl Chicago (17ú heag.)Radhakrishnan, Sarvepalli. The Principal Upanisads: By S. Radhakrishnan. London: : Unwin brothers, 1953.
Lua MLA (8ú heag.)Radhakrishnan, Sarvepalli. The Principal Upanisads: By S. Radhakrishnan. : Unwin brothers, 1953.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.