APA (7th ed.) Citation

Radhakrishnan, S. (1953). The principal Upanishads. Allen & Unwin.

Chicago Style (17th ed.) Citation

Radhakrishnan, Sarvepalli. The Principal Upanishads. London: Allen & Unwin, 1953.

MLA (9th ed.) Citation

Radhakrishnan, Sarvepalli. The Principal Upanishads. Allen & Unwin, 1953.

Warning: These citations may not always be 100% accurate.