Radhakrishnan, S. (1953). The principal Upanishads. Allen & Unwin.
Cita Chicago (17th ed.)Radhakrishnan, Sarvepalli. The Principal Upanishads. London: Allen & Unwin, 1953.
Cita MLA (9th ed.)Radhakrishnan, Sarvepalli. The Principal Upanishads. Allen & Unwin, 1953.
Atenció: Aquestes cites poden no estar 100% correctes.