Sivananda,Swami. (1998). Principles Upanishads (NA.). Divine Life Society.
Chicago-čujuhus (17. p.)Sivananda,Swami. Principles Upanishads. NA. Himalayas: Divine Life Society, 1998.
MLA-čujuhus (9. p.)Sivananda,Swami. Principles Upanishads. NA. Divine Life Society, 1998.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.