APA aipamena

Sivananda,Swami. (1998). Principles Upanishads (NA.). Divine Life Society.

Chicago Style aipamena

Sivananda,Swami. Principles Upanishads. NA. Himalayas: Divine Life Society, 1998.

MLA aipamena

Sivananda,Swami. Principles Upanishads. NA. Divine Life Society, 1998.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.