APA (7th ed.) Citation

Nikhilananda Swami. (2003). The Principal Upanishads. Dover Publications.

Chicago Style (17th ed.) Citation

Nikhilananda Swami. The Principal Upanishads. Mineola, N.Y: Dover Publications, 2003.

MLA (9th ed.) Citation

Nikhilananda Swami. The Principal Upanishads. Dover Publications, 2003.

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