APA (7th ed.) Citation

Hume, R. (1931). The thirteen principal upanishads (2nd rev.). O.U.P.

Chicago Style (17th ed.) Citation

Hume, Robert. The Thirteen Principal Upanishads. 2nd rev. Madras: O.U.P, 1931.

MLA (9th ed.) Citation

Hume, Robert. The Thirteen Principal Upanishads. 2nd rev. O.U.P, 1931.