The thirteen principal Upanishads :
translated from the Sanskrit with an outline of the philosophy of the Upanishads and an annotated bibliography /
by Robert Ernest Hume ...
APA Citation
Hume, R. Ernest. (1958). The thirteen principal Upanishads: translated from the Sanskrit with an outline of the philosophy of the Upanishads and an annotated bibliography. Second edition / [London: Oxford University Press.
MLA Citation
Hume, Robert Ernest, 1877-1948. The Thirteen Principal Upanishads: Translated From the Sanskrit With an Outline of the Philosophy of the Upanishads And an Annotated Bibliography. Second edition / [London: Oxford University Press, 1958.
Warning: These citations may not always be complete (especially for serials).