Radhakrishnan, S. (1953). The principal upanisads: By S. Radhakrishnan. : Unwin brothers.
Chicago-viite (17. p.)Radhakrishnan, Sarvepalli. The Principal Upanisads: By S. Radhakrishnan. London: : Unwin brothers, 1953.
MLA-viite (8. p.)Radhakrishnan, Sarvepalli. The Principal Upanisads: By S. Radhakrishnan. : Unwin brothers, 1953.
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